Standard Cables from Board to Personal Computer | Omron CQM1H-SCB41

ConnectionsSection 4-3

4-3-2 Standard Cables from Board to Personal Computer

	Board port	Computer	Computer	Network type	Model	Length	Remarks
			port

	RS-232C port	IBM PT/AT or	D-sub, 9-pin	Host Link	XW2Z-200S-CV	2 m	Conforms to
	(D-sub, 9-pin	compatible	male	(SYSMAC			ESD.
	(D-sub, 9-pin	compatible	male	(SYSMAC	XW2Z-500S-CV	5 m	ESD.
	female)			WAY)	XW2Z-500S-CV	5 m

The following Connecting Cables can be used to connect an RS-232C to the computer.

Board port	Computer	Computer	Network type	Model	Length	Remarks
		port

RS-232C port	IBM PT/AT or	D-sub, 9-pin	Host Link	XW2Z-200S-V	2 m	---
(D-sub, 9-pin	compatible	male	(SYSMAC
(D-sub, 9-pin	compatible	male	(SYSMAC	XW2Z-500S-V	5 m
female)			WAY)	XW2Z-500S-V	5 m

Preparing an RS-232C Cable for the Computer

The following cables and connectors can be used to manufacture a cable to con- nect the Serial Communications Board to the PC.

Applicable Connectors

The following connector connects to the Serial Communication Board.

	Name	Model	Specifications

	Socket	XM2A-0901	9-pin male	Used together
				(provided with
	Hood	XM2S-0911-E	For 9-pin socket,	(provided with
	Hood	XM2S-0911-E	For 9-pin socket,	Board).
			metric screws,	Board).
			metric screws,
			ESD
			countermeasures

The following connector connects to an IBM PC/AT or compatible

Name	Model		Specifications

Socket	XM2D-0901	9-pin male		Used together.

Hood	XM2S-0913	For 9-pin socket,
		inch screws

IBM PC/AT or
compatible
(9-pin, male)	RS-232C port on Serial
	Communications Board
CQM1H CPU Unit
Socket:
XM2D-0901
Hood: XM2S-0913 (9-pin, female)
Recommended cable
Hood: XM2S-0911-E	Socket: XM2A-0901

Hood and Socket provided with Board.

Recommended Cables

UL2464 AWG28 5P IFS-RVV-SB (UL-approved, Fujikura Ltd.)

AWG28 5P IFVV-SB (not UL-approved, Fujikura Ltd.)

UL2464-SB (MA) 5P 28AWG (7/0.127) (UL-approved, Hitachi Cable, Ltd.)

CO-MA-VV-SB 5P 28AWG (7/0.127) (not UL-approved, Hitachi Cable, Ltd.)

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Image 56

Omron CQM1H-SCB41 Standard Cables from Board to Personal Computer, Preparing an RS-232C Cable for the Computer

Contents

Sysmac CQM1H Series Serial Communications Board Omron Product References  Omron Name Cat. No Contents About this Manual Table of Contents Communications for 11 Data Links 107 Precautions Intended Audience General PrecautionsSafety Precautions Operating Environment Precautions Application Precautions Xiv Conformance to EC Directives Applicable DirectivesConcepts Conformance to EC Directives Recommended Ferrite Cores Recommended Mounting Method Section Features OverviewModel Number Serial Communications Boards System Configuration Protocol Overview Mounting Location Host Link Mode Sending C-mode Host Link CommandsProtocol Macros Slave-initiated Communications No-protocol Communications 4 PC 11 Data Links NT Links -- 1N Mode NT Links -- 11 Mode Specifications Basic Operating ProcedureGeneral Specifications Serial Communications Board Board Components and Installation Indicators Board IndicatorsIndicator Color Status Meaning Component Names and Functions 2 RS-232C Port CPU Unit IndicatorsConnector Pin Layout Applicable Connectors Tions method Wire Wire, 1N Synchroniza3 RS-422A/485 Port Recommended Cables Label Name Settings Factory setting SwitchesTerminating Resistance Switch Wire or 4-Wire Switch Installation Mounting the Board External Dimensions Mounting Height and Connector Cover Dimensions Precautions in Handling the Board Wiring ConnectorsStandard Connectors For Both RS-232C RS-422A/485 Recommended Cables RS-232C Cables RS-422A/485 Cable Wiring PrecautionsReducing Electrical Noise for External Wiring WiringSection Recommended RS-232C Wiring Examples Pin Function Factory Setting Recommended RS-422A/485 Wiring Examples Wire ConnectionsRecommended RS-422A/485 Cable Model Manufacturer CO-HC-ESV-3Px7/0.2 Hirakawa Hewtech Corp Length Model Using a 3G2A9-AL001 Link AdapterUsing an NT-AL001-E RS-232C/RS-422 Link Adapter Shield Connected to Hood FG Wiring ConnectorsCable Preparation Shield Not Connected to Hood FG Assembling Connector Hood Soldering Connecting to the Board Default Settings and Related Bits/Flags PC Setup Settings Contents Addresses Words Bits Function Applicable Mode Control Bits, Flags, and Status Information Word Bits Function Communications Modes 00 to Port Word Bits Function Inner Board Error Flag Slot 1 Inner Board Error Code Hex Host Link Communications Host Link Communications TXD-- Instruction Simultaneous Usage of Both Ports Serial communications Features ModeHost Link Communications Application Procedure Host Link Specifications Port Bits Default Function Setting Host-initiated Communications Host Link Commands PC-initiated Communications TXD-- Instruction Port Configura Schematic diagram Tion RS-232C ConnectionsTypes of Connection Connection Examples Using NT-AL001-E Converting Link Adapters RTS RS-232C 1N Connections Using RS-232C Ports Connections Using RS-422A/485 Ports 1N Connections Using RS-422A/485 Ports Board port Computer Network type Model Length Remarks Port Standard Cables from Board to Personal ComputerPreparing an RS-232C Cable for the Computer Format ProtocolNormal Response Frame Error Response Frame Format FCS Frame Check Sequence Communications Sequence Computer Example Program for Using the TXD-- InstructionExample Programs Communications Control Signals Communications Timing TXD-- Application Example Setting a Transmission Delay Host Link Commands Header code PC mode Name End Contents Probable cause Corrective measures Code End Codes Changes from Previous Products RS-232C Ports Half-duplex transmissions that use CD Full-duplex transmissions that do not use 2 RS-422A/485 Ports Protocol Macros Overview of the Protocol Macro Functions Protocol Macro Function Specifications Sequence contents Number of steps Step common Per sequence Parameters TransmissionControl Parameters Response Step contents Commands Error processingRepeat counter Retry count Description Message con Con Tents Header Stant Terminator Data attrib Utes ConData attrib Stant Utes of ad Vari Be traced Using the Protocol Macro FunctionUsing the Standard System Protocols Modifying Standard System Protocols SEND&RECEIVE Storage Memory Restrictions in Using the CX-ProtocolRestriction Procedure Select Transfer to PLC via Online or Using Standard System Protocols Port Bits Setting Function Receive Data Using User-created ProtocolsSend Data Transferring the created project to the Board Port Configuration Schematic diagram Connecting RS-232C Ports Connections to E5CK Controller Connections to a Modem DIP SW 485 RS-422A Terface Hood 3G2A9-AL001 Protocol Structure Receive Sequence Parameters Parameter Meaning Level Setting Step Parameters Level Possible changes in settings Board Identification Error Flag hardware error Protocol Data Error FlagPort 2 Protocol Macro Execution Error Flag Port 1 Protocol Macro Execution Error Flag Word Bits Name and Function Classifi Set Reset Cation Port 1 Communications Error FlagPort 2 Communications Error Flag Port 1 Sequence Abort Completion Flag Port 1 Protocol Macro Error Code Port 2 Protocol Macro Error CodePort 2 Tracing Flag Port 1 Executed Reception Case No. code Port 2 Restart Bit Port 1 Continuous Trace Start/Stop BitPort 2 Continuous Trace Start/Stop Bit Port 1 Shot Trace Start/Stop Bit Port 1 Transfer Step Error Processing Flag Port 2 Transfer Step Error Processing FlagPort 1 Sequence END Completion Flag Port 1 Forced Abort Bit Using Protocol Macros PMCR-- Instruction SpecificationsError Codes Executing Communications Sequences Flags First Receive DataStorage Word D PMCR-- Operation Programming Example Ladder Program StructureOperand Areas and Address Ranges Ladder Program Example ConnectionsSend Word Allocation for Sequence No Present Value Read Receive Word Allocation for Sequence No Present Value Read Operand Settings for the PMCR-- Instruction Precaution on Reception Failures for Pmcr Ladder Programming Example Transmission Methods Baud rate b/s Lag time ms Error Flags for Overrun, Framing, and Parity ErrorsTime Lag t1 Processing When a Sequence Ends Abnormally Example Precautions on Using the Force Abort Bit No-protocol Communications No-protocol Specifications Specification Send/Receive Message Frames Start code End code Yes 100 Connecting to a Bar Code Reader via RS-232C Using No-protocol Communications Transmit TXD-- in No-protocol ModeTransmit TXD-- and Receive RXD Control Word C Receive RXD-- in No-protocol Mode TXD-- Communications Procedure RXD-- Communications Procedure PC Settings Computer SettingsApplication Example Conditions Communications for 11 Data Links PC Setup Setting Port Bits Function SettingStarting Data Links OverviewSection Specifications Overview Using 11 Data Links Master PC SettingsSlave PC Settings Conditions NT Link Communications NT Links 1N Mode NT Links 11 ModePrecautions Overview of NT Links 115 NT Link Settings for 1N Mode NT Link Settings for 11 Mode 117 118 Troubleshooting and Maintenance Front-panel Indicator Error Displays Indicators Possible cause Remedy Board CPU Unit Serial Communications TroubleshootingBoard Error Information 122 123 124 Board ReplacementSection 126 Error Indicator Error details Cause Remedy Code Not perform 128 3 1N NT Link Mode Cleaning and Inspection Cleaning Inspection Materials Required DailyMaterials Required Occasionally Inspection Items Replacement Procedure Board ReplacementSettings after Replacing the Board Protocol Macros Designed with CX-Protocol Using Standard System Protocols ProcedureIntroduction Example Protocol name Function Standard System ProtocolsReceive Data Word Allocation 4th Operand CompoWay/F System Configuration for Standard System ProtocolCompoWay/F Master Protocol Communications Specifications Transmission ProcedureCommand and Response Formats Command Format Appendix B Command Frame ContentsResponse Frame Contents Command Frame Command Data contents CodeExample End code Name Meaning Command and Text Variable type ContentsExample Variable Area Read Response Text CompoWay/F Master Protocol Sequences Structure of the Protocol Response Frame CompoWay/F Message Frames and PMCR260 OperandsSend with Ascii Conversion, with Response Sequence No Send Data Word Allocation 2nd Operand of PMCR260 Receive Data Word Allocation 3rd Operand of PMCR260 145 Broadcast with Ascii Conversion, No Response Sequence No Send with No Conversion and with Response Sequence No Broadcast with No Conversion and No Response Sequence No 149 150 Connections RS-232C RS-422 4-wire Connections RS-485 2-wire Connections Appendix C E5jK Digital Controller Read Protocol RS-485 Connection Connection ConfigurationRS-232C Connection Read Process Value Sequence No Read Set Point during SP Ramp Sequence NoAppendix C Send Data Word Allocation 2nd Operand of Pmcr Read Set Point Sequence No Read Alarm Value Sequence NoRead MV Sequence No Read Cooling Coefficient Sequence No Read Manual Reset Value Sequence No Read Dead Band Sequence No Read SP Ramp Time Unit and Set Value Sequence No Read Hysteresis Sequence NoRead Control Period Sequence No Read LBA Detection Time Sequence No Read MV at Stop Time and at PV Error Sequence No.013 Read MV Limits Sequence No Read Input Shift Limits Sequence No Read Alarm Hysteresis Sequence NoRead Input Digital Filter Sequence No Read Level 0 Parameters Sequence No Read Level 1 Parameters 1 Sequence No Read Level 1 Parameters 2 Sequence No 166 Read Level 2 Parameters 1 Sequence No Read Level 2 Parameters 2 Sequence No 169 General-purpose Read Sequence No Appendix D E5jK Digital Controller Write Protocol Write Alarm Value Sequence No Write Set Point Sequence No Write Manual Reset Value Sequence No Write Cooling Coefficient Sequence NoWrite Dead Band Sequence No Write Hysteresis Sequence No Appendix D Write Control Period Sequence NoWrite SP Ramp Time Unit and Set Value Sequence No Write MV Limits Sequence No Write MV at Stop Time and at PV Error Sequence NoWrite LBA Detection Time Sequence No Write Input Shift Value Sequence No Write Alarm Hysteresis Sequence NoWrite Input Digital Filter Sequence No Write Level 0 Parameters Sequence No Write Level 1 Parameters 1 Sequence No Write Level 1 Parameter 2 Sequence No Write Level 2 Parameters 1 Sequence No Write Level 2 Parameters 2 Sequence No Switch to Level 0 Software Reset Sequence No General-purpose Write Sequence No Run/Stop Sequence No Remote/Local Sequence No Execute/Cancel AT Sequence No Switch to Level 1 Sequence No Software Reset Sequence No E5ZE Temperature Controller Read Protocol Appendix E Signal name Signal direction Pin No Brevi Ation RS-232C Connections Pin No Signal name Abbreviation Signal direction RS422/485 Connections RS-485 Appendix E RS-422A Switch Settings Communications Parameter DIP SwitchUnit Number Switch Baud Rate DIP Switch 192 Read Output Values Sequence No Read Set Point, Process Value, and Output Value Sequence No 195 196 Read Output Mode Sequence No Read Alarm Mode Sequence No Read Alarm Temperatures Sequence No Read Operation Status Sequence No Read Error Status Sequence No Read Setting Unit Sequence No Read Input Shift Value Sequence No Read Ramp Value Sequence No Read Present Set Point Sequence No Read Output Value Limit Sequence No Read Output Value Change Rate Limit Sequence No Read HB Alarm and HS Alarm Valid Channels Sequence No Read Heater Current and SSR Leakage Current Sequence No.121 Read Dead Band/Overlap Band Sequence No 208 E5ZE Temperature Controller Write Protocol Appendix F Write Set Point Setting Unit 1 Sequence No Write Set Point Setting Unit 0.1 Sequence No 212 213 Write Output Mode Sequence No Write Alarm Mode Sequence No Write Alarm Temperature Setting Unit 1 Sequence No Write Alarm Temperature Setting Unit 0.1 Sequence No Start Autotuning Sequence No Cancel Autotuning Sequence No Write Setting Unit Sequence No Appendix F Write Ramp Value Sequence No Write Manual Output Value Sequence No Write Output Value Limit Sequence No Write Output Value Change Rate Limit Sequence No Save Settings Sequence No Initialize Settings Sequence No Write HB and HS Alarm Valid Channels Sequence No Write Dead Band/Overlap Band Sequence No Start Control Sequence No Stop Operation or Control Sequence No Start Manual Operation Sequence No E5jJ Temperature Controller Protocol Appendix G Signal name Abbreviation Signal direction Pin No RS422A/485 Connections Input Signal ground Appendix G Select Remote Mode Sequence No Select Local Mode Sequence NoSelect Backup Mode Sequence No Select RAM Write Mode Sequence No Save Set Point Sequence No Write Parameters 1 Sequence No Write Parameters 2 Sequence No 235 Read Parameters 1 Sequence No Read Parameters 2 Sequence No 238 Read Output Value Sequence No Read Set Point Limit Sequence No Read Heater Current Sequence No Read Initial Status Sequence No 241 242 Appendix H ES100j Digital Controller Protocol Appendix H Appendix H RS-422A/485 Connections Read Event Data Sequence No Read Time Signal Sequence No Read Error Detection Data Sequence No 249 Read Heater Burnout Data Sequence No Read PV Data Sequence No Read SP Data Sequence No Read MV Data Sequence No Read Control Monitor Data Sequence No 255 Read Adjustment Parameters Sequence No 257 258 Write Adjustment Parameters Sequence No Read PID Control Parameters 1 Sequence No 261 Read PID Control Parameters 2 Sequence No 263 Write PID Control Parameters 1 Sequence No 265 Write PID Control Parameters 2 Sequence No Read Local SP Sequence No 268 Write Local SP Sequence No Read Program Parameters Sequence No 271 Write Program Parameters Sequence No Remote Setting Mode Sequence No Local Setting Mode Sequence No External Setting Mode Sequence No Run Command Sequence No Reset Stop Sequence No Auto Mode Sequence No Manual Mode Sequence No Execute A.T. Sequence No Cancel A.T. Sequence No Change Pattern No. Sequence No Change Bank No. Sequence No Read Controller Status Sequence No General-purpose Command Sequence No 282 K3Tj Intelligent Signal Processor Protocol Protocol Configuration Ladder Interface Settings AppendixSequence Communications Function Ladder interface Send word Receive word Allocation Signal name Abbreviation Pin No Direction K3T j Intelligent Signal Processor Protocol Signal name Abbreviation Signal direction Terminal Inverting output Input or output Non-inverting output Reset by Unit Number Sequence No Reset Control Continuous Units Sequence No 289 Write Set Value H Continuous Units Sequence No Write Set Value L Continuous Units Sequence NoWrite Set Value LL Continuous Units Sequence No Write Set Value with Bank by Unit Number Sequence No Write Set Value HH with Bank Continuous Units Sequence No Write Set Value H with Bank Continuous Units Sequence No Write Set Value L with Bank Continuous Units Sequence NoWrite Set Value LL with Bank Continuous Units Sequence No Write Set Value O5 with Bank Continuous Units Sequence No Read Set Value by Unit Number Sequence No Write Set Value O2 with Bank Continuous Units Sequence NoWrite Set Value O1 with Bank Continuous Units Sequence No Read Set Value HH Continuous Units Sequence No Read Set Value H Continuous Units Sequence NoRead Set Value L Continuous Units Sequence No Read Set Value LL Continuous Units Sequence No Read Set Value with Bank by Unit Number Sequence No Read Set Value HH with Bank Continuous Units Sequence No Read Set Value H with Bank Continuous Units Sequence NoRead Set Value L with Bank Continuous Units Sequence No Read Set Value LL with Bank Continuous Units Sequence No Read Set Value O3 with Bank Continuous Units Sequence No Read Set Value O2 with Bank Continuous Units Sequence NoRead Set Value O1 with Bank Continuous Units Sequence No Read Holding Data Sequence No Read Holding Data PH Continuous Units Sequence No Read Display Value PV by Unit Number Sequence No Offset Contents DataRead Holding Data BH Continuous Units Sequence No 300 Read Display Value PV Continuous Units Sequence No Model Data Read by Unit Number Sequence No Model Data Read Continuous Units Sequence No 303 Appendix J V500/V520 Bar Code Reader Protocol Appendix J V500 Connections V520 Connections System Setting V500-C11 BCR FunctionsHost Interface V520-R121 BCR Read Start Sequence No BCR Read Stop Sequence NoData Read Sequence No Complete Data Read Sequence No BCR Function Write V500 Sequence No CODE93 BCR Function Read V500 Sequence No Log Data Output Request V500 Sequence No Preset Data Set V500 Sequence No BCR Connection Confirmation V500 Sequence No Log Data Clear V500 Sequence No Data Continuous Read Scan V500 Sequence NoData Continuous Read Interrupt V500 Sequence No BCR Initialize V500 Sequence No Data Continuous Read Interrupt V520 Sequence No General-purpose Command 1 Sequence NoGeneral-purpose Command 2 Sequence No Appendix J Receive Data Storage Word Allocation 3rd Operand of Pmcr Appendix K 3Z4L Laser Micrometer Protocol Appendix K 319 DIP Switch Settings 3Z4L-3000 Series DIP Switch3Z4L-4000 Series DIP Switch Setting Status Delimiter Control Code Setting 3Z4L-4000 Series 3Z4L-3000 Series 322 Memory Switch Set Sequence No Offset Contents Data Data format Series3Z4L Clear Sequence No Mm Unit Set Sequence No Calibration Set Sequence No Calibration Release Sequence No Program Number Set 3000-series Sequence No Measurement Condition Set 3000-series Sequence No 326 327 Measurement Condition Release 3000-series Sequence No Measurement Condition List Request 3000-series Sequence No 329 330 Continuous Measurement Start Scan 3000-series Sequence No Single Run Measurement Start 3000-series Sequence NoZero Run Measurement Start 3000-series Sequence No Statistic Processing Execution 3000-series Sequence No Measurement Termination 3000-series Sequence NoData Request 3000-series Sequence No Statistic Processing Non-execution 3000-series Sequence No All Statistic Memory Clear 3000-series Sequence NoStatistic Processing Memory Clear 3000-series Sequence No Statistic Result Request 3000-series Sequence No Offset Contents Data Data format Appendix K Memory Switch Set 1 3000-series, High-speed Type Sequence No Memory Switch Set 2 3000-series, High-speed Type Sequence No 337 338 3Z4L Initialize 3000-series Sequence No Measurement Condition Set 4000-series Sequence No 341 Measurement Condition Release 4000-series Sequence No Measurement Condition List Request 4000-series Sequence No Single Run Measurement Start 4000-series Sequence No Deflection Measurement Start 4000-series Sequence No Continuous Measurement Start Scan 4000-series Sequence No Continuous Measurement Termination 4000-series Sequence No Data Request 4000-series Sequence NoForced Positive Zero 4000-series Sequence No Forced Negative Zero 4000-series Sequence No General-purpose Command 1 4000-series Sequence No General-purpose Command 2 4000-series Sequence No Appendix L Visual Inspection System Protocol Appendix L Pin No Signal name Abbreviation For RS/CS Flow Control Continuous Measurement Execution Scan F200 Sequence No Offset Content data format DataMeasurement Execution F200 Sequence No Continuous Measurement Execution Interrupt F200 Sequence No Evaluation Condition Change F200 Sequence No Reference Object Registration Group F200 Sequence NoReference Object Registration Criterion F200 Sequence No Arbitrary Measurement Value Acquisition F200 Sequence No Measurement Execution F300 Sequence No Continuous Measurement Execution Scan F300 Sequence No 358 Continuous Measurement Execution Interrupt F300 Sequence No 360 Illumination Fluctuation Follow Execution F300 Sequence No Measurement Execution and Positioning F350 Sequence No Scene Switching and Positioning F350 Sequence No Camera Designation and Positioning F350 Sequence No Camera Change Decrease by 1 F200/300 Sequence No Reset F200/300 Sequence No Scene Switching Decrease by 1 Sequence NoScene Switching Increase by 1 Sequence No Camera Change Increase by 1 F200/300 Sequence No Scene Switching Arbitrary Sequence No General-purpose Command Send Sequence NoGeneral-purpose Command Send/Receive Sequence No Measurement, Inspection Termination Sequence No 366 Appendix M V600/V620 ID Controller Protocol Appendix M 369 RS-422A Connections V600/620-CD1D DIP Switches DIP Switch 372 V600-CAjA DIP Switches Read ASCII/1 Sequence No Read ASCII/2 Sequence No Read ASCII/4 Sequence No Read ASCII/8 Sequence No Read Hexadecimal/1 Sequence No Read Hexadecimal/2 Sequence No Read Hexadecimal/4 Sequence No Read Hexadecimal/8 Sequence No Auto-read ASCII/1 Sequence No Auto-read Hexadecimal/1 Sequence No Polling Auto-read Ascii Sequence No Polling Auto-read Sub-command ASCII/8 Sequence No Polling Auto-read Sub-command ASCII/2 Sequence NoPolling Auto-read Sub-command ASCII/4 Sequence No Polling Auto-read Sub-command Hexadecimal/2 Sequence No Polling Auto-read Hexadecimal Sequence No Write ASCII/1 Sequence No.518 Polling Auto-read Sub-command Hexadecimal/4 Sequence NoPolling Auto-read Sub-command Hexadecimal/8 Sequence No.517 Write ASCII/2 Sequence No 388 Write ASCII/4 Sequence No Write ASCII/8 Sequence No Write Hexadecimal/1 Sequence No Write Hexadecimal/2 Sequence No Write Hexadecimal/4 Sequence No Write Hexadecimal/8 Sequence No Polling Auto-write ASCII/2 Sequence No Auto-write ASCII/1 Sequence NoAuto-write Hexadecimal/1 Sequence No Polling Auto-write Subcommand ASCII/2 Sequence No Polling Auto-write Subcommand ASCII/4 Sequence NoPolling Auto-write Subcommand ASCII/8 Sequence No Polling Auto-write ASCII/4 Sequence No Polling Auto-write Subcommand Hexadecimal/2 Sequence No Polling Auto-write Subcommand Hexadecimal/4 Sequence NoPolling Auto-write Hexadecimal/2 Sequence No Polling Auto-write Hexadecimal/4 Sequence No Data Check Sequence No Polling Auto-write Subcommand Hexadecimal/8 Sequence NoPolling Auto-write Hexadecimal/8 Sequence No Control Sequence No Error Information Read Sequence No Command Processing Cancel Sequence No Polling Auto-read Command Processing Cancel Sequence No Polling Auto-write Command Processing Cancel Sequence No 402 Hayes Modem AT Command Protocol Appendix N Compatible Modems Modem Settings Operand and Word Settings of Pmcr Dialling Password Verification Setting Example Operand Password Verification OperationData Send/Receive Communication Errors Escape ModeHang Up Command Numbers Index 413 414 415 416 417 Original production Revision code Date Revised contentRevision History Authorized Distributor