PSC SP400rf manual RS-232 Feature only, Wack ACK

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OPTION 3 — SEND ACK TO THE SCANNER AFTER CTS IS ENABLED FROM THE HOST.

RS-232 FEATURE ONLY.

WACK MODE DISABLED—ACK will be sent immediately, once the radio layer of software detects a valid transmission from the scanner. With WACK Mode disabled, ACK is sent to the scanner regardless of what the interface layer (software) has done or is doing.

WACK MODE ENABLED2—WACK is sent3 once the radio layer (software) validates the message, then ACK is sent to the scanner once the interface layer (software) validates the transmission from the scanner, has sensed the CTS being enabled and has received an ACK from the host (if the interface supports handshaking).

WACK 3

ACK

GENERAL

FEATURES

CTS enabled

WACK MODE RECOMMENDATION

It is recommended that WACK Mode be enabled to ensure the best, most accurate performance. Scanner response will seem quicker when WACK Mode is disabled, however, there is a greater chance that the scanner will erroneously respond with a"Good Read" beep when the host has not received the message, or is not ready for a message. As described in the options above, this is because the interface layer status is not checked to ensure its readiness to receive a message from the radio.

2When WACK mode is enabled, wait time for host acknowledgement is a critical setting. Reference the feature in this section titled "Wait Time for Host Acknowledge".

3In some systems, the ACK response is sent so quickly from the interface that it can override the WACK signal. In this case, the WACK is never perceived by the scanner.

82	SP400RF Programming Guide

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Contents Handheld Laser Scanner PSC Scanning, Inc DisclaimerContents RS-232 Iii SP400RF Programming Guide Need to Understand the Basics Integrating Peripherals with Host SystemsChanging Interfaces SP400RF Interface GroupsCustomizing Your Scanner Operation HOW to Program Using Barcodes What is Programming MODE?Programming Overview Scanner Response When in Programming Mode Programming SessionReturn to Factory Settings Configuration UploadSET ENDWhere to GO from Here IBM 4683/84 4693/94 Port 5B Settings IBM 4683/84 4693/94 Port 5B Interface SELECTION1IBM 4683/84 4693/94 Port 9A, 9B, 9C, 9E Settings SET Send AS CodeIBM 4682/92 Port E Settings IBM 4682/92 Port E Interface SelectionNCR Ocia Nine BIT Long Format Interface Selection PSC1 Ocia Interface SelectionSNI Ocia Interface Selection SET NableIsable Nable IsableFull Ascii Wand Emulation Interface SelectionLOW HighC128 ENDRS-232 Interface Selection Communication ParameterSNI RS-232 Interface Selection Data Bits Start Bit Parity Bits Stop Bits Data Format Settings Hardware Control Software Control SET = N ONE = 90 Milliseconds = 100 Milliseconds PC Keyboard Wedge Interface Selection TypeEyboard Wedge Interface Intercharacter Delay = 55 Milliseconds Ibmxxxx STI Wedge STI Keyboard Wedge Interface SelectionRS-232AND Keyboard Wedge Interfaces only Label Transmit Format Configuration ItemsPrefix & Suffix Label Transmit Format Config SET SET Prefix For the example in step four, scan 0, 2, 2SET SET Suffix For the example in step five, scan 0, 7, 0Setting a Single Character Prefix or Suffix ONE Character only ~ 7E Del Ascii Character SETUPC-A Our example, we would scan the UPC-A symbology label UPC-A UPC-EEAN-8 EAN-13Code Codabar Interleaved 2 Standard 2 MSI/PLESSEY Scan the barcodes values Disabling Label I.D. for a Specific Symbology Label Transmit Format Config UPC/EAN Interface TypeCode Symbology Options Overview Symbology Selection Enable UPC/EAN Disable UPC/EAN Enable Code Disable CodeEnable Codabar Disable Codabar Enable Code Disable Code Enable MSI/PLESSEY Disable MSI/PLESSEYUPC/EAN Options UPC/EAN Expansion Optional Disabled ENDRequired Sendcheck Digit UPC-ESET EAN-8 Send Check DigitPRICE/WEIGHT Check Digit Code 39 Options Ascii Scan the Set Code 39 Minimum Label Length barcode Code 39 Minimum Label Length Interleaved 2 Enable DisableSET Dont Compute ComputeScan the Enable First Fixed barcode SET Fixed Engths Standard 2 Iata Standard 2 Normal or Iata SelectionDont Compute Dont Transmit Enable Disable Scan the Enable First Fixed barcode Standard 2 of 5 Fixed and Minimum Label Lengths Codabar Options Codabar Check Digit & Variable Length Format = abcd/tn*e TRANSMIT1Codabar START/STOP Character Codabar Fixed Length SETScan the Set Second Fixed Length label TWO Check Digits ONE Check DigitMSI/PLESSEY Check Digit MSI/PLESSEY Fixed Length MSI/PLESSEY SET Fixed Lengths Code 128 Options General Features General Features Communications ProtocolEnable Disable ACK/NAKItem on Not on File ENDSTX/ETX BCD Ascii SET SET STX/ETX END SET STX SET ETXWhen to Acknowledge Wack RS-232 Feature only Wack ACKOption ① Option ➁ Option ➂ When to Beep Options SYNC2NAK Wack ACK NAK SET Ption Option Beeper VolumeNormal Loud Channel Radio Channel FrequencyRadio Transmit Power Wait Time for Host Acknowledge Wait TimeWait Time for Host Acknowledge Verify UPC-A Verify UPC-EVerify EAN-8 Verify EAN-13Verify Code Verify Codabar Verify CodeVerify MSI/PLESSEY ONE Read TWO Reads Three Reads Four ReadsLOW Battery Indication Method Beep Twice No BeepFactory Defaults EnableDisable UPC/EANCode Disable Item ON/OFF File ACK/NAK ProtocolETX/STX HighINTERFACE-DISCRETE Defaults RS-232/KEYBOARD WedgeNone ONE100 IBM InterfacesCreating Multifunction Labels Host ProgrammingNeed More Information 102 UPC-A W/2 Digit ADD-ON UPC-A W/ 5 Digit ADD-ON UPC-E EAN-8 MSI/PLESSEY104 Blank Asia Pacific AustraliaFrance Germany