Hitachi NJI-350B 11.6.2 Port 2

Chapter 11 Communication Specifications

11-9

11.6.2 Port 2

Port 2 of the MICRO-EH is a communication port that uses either the RS-422 or RS-485 protocol as interface. It is also a

dedicated port with which to perform communication by the H series dedicated procedure (high protocol), which allows

1:n station communication. Figure 11.6 and 11.7 show examples of port 2 connections for 1:n station communication.

Moreover, the connection for communicating 1:1 is performed by connecting only the first CPU in the figure below.

(1) In case of RS-422

MICRO-EH

(32nd CPU)

MICRO-EH

(2nd CPU)

MICRO-EH

(1st CPU)

Host

RD (+)

RD (-)

SD (-)

SD (+)

(13) SDP

(12) SDN

(11) RDP

(10) RDN

(13) SDP

(12) SDN

(11) RDP

(10) RDN

(13) SDP

(12) SDN

(11) RDP

(10) RDN

Figure 11.6 Connection for 1:n station communication by RS-422

(2) In case of RS-485

Relay terminal blockRelay terminal block

Twisted pair cable

Relay terminal block

MICRO-EH

(1st CPU)

Host

RD (+)

RD (-)

SD (-)

SD (+)

B

A

MICRO-EH

(32nd CPU)

(13) SDP

(12) SDN

(11) RDP (10) RDN

(13) SDP

(12) SDN

(11) RDP (10) RDN

Figure 11.7 Connection for 1:n station communication by RS-485

Contents

Main WARNING IMPORTANT LIMITED WARRANTY AND IMITATION OF LIABILIT Y Page Safety Precautions DA NGER CA UTION 1. Installation CAUTION Page Page Page Table of Contents Page Page Page Chapter 1 Features Chapter 1 Features Page Chapter 2 System Overview Chapter 2 System Overview Chapter 2 System Overview Chapter 3 Function and Performance Specifications 3.1 General Specifications 3.2 Function Specifications Page Page Page 3.3 Performance Specifications 3.3.1 Calculation Specifications 3.3.2 Input Specifications (1) DC input Num ber of i nput points Nu mb er o f co mmo n (2) AC input 3.3.3 Output Specifications (1) DC output (2) DC output: LCDC-Low Current (3) DC output: HCDC-High Current (4) DC output (ESCP type): HCDC-High Current (5) DC output (ESCP type): LCDC-Low Current (6) Relay output (7) AC output (SSR) 3.3.4 High-Speed Counter Specifications 3.3.5 PWM Output/Pulse Train Output Specifications 3.3.6 Analogue Input Specifications 3.3.7 Analogue Output Specifications 3.3.8 Potentiometer Analogue Input Specifications 3.3.9 Interrupt Input Specifications 3.3.10 Backup 3.3.11 Expansion 3.3.12 Clock Function 3.3.13 Power Supply for Sensor Chapter 4 Product lineup and wiring 4.1 Product lineup Page 4.2 10-Point Basic Unit 4.3 14-Point Basic Unit 4.4 23-Point and 28-Point Basic Unit 4.5 Expansion Unit 4.6 Terminal Layout and Wiring 10-point type EH-D10DT, EH-D10DTP EH-D10DR 14-point type EH-A14DR, EH-D14DR EH-A14EDR, EH-D14EDR EH-A14AS EH-D14DTP EH-D14DT (The input wiring is the same as EH-D14DTP.) EH-D14EDTP EH-D14EDT (The input wiring is the same as EH-D14EDTP.) 23-point type EH-A23DRP - EH-A23DRT EH-D23DRP (The input wiring is the same as EH-A23DRP.) 28-point type EH-A28DRP EH-A28DRT EH-D28DRP EH-D28DRT EH-A28AS EH-D28DTP EH-D28DT (The input wiring is the same as EH-D28DTP.) EH-A28DR EH-A28EDR Page 4.7 Weights and Power Consumption 4.8 Exterior Dimensions Page Chapter 5 Instruction Specifications 5.1 Instruction Classifications 5.2 List of Instructions 5-2 The following lists the instructions. 1. Basic instructions (sequence instructions) 5-3 2. Basic instructions (timer, counter) 5-4 3. Basic instructions (relational box) 5-5 5-6 4. Arithmetic instructions 5-7 5-8 5. Application instructions 5-9 5-10 *3: Processing time when n=1. *4: Processing time when n = 1 5-11 6. Control instructions 7. Transfer instructions 8. FUN instructions 5-12 Page Page Page Page Page Page Page Page Page Page Page Page Page [ ] Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 5-73 SHR (d, n) Page Page Page Page Page Page Page Page Page 5-83 The data in WM000 to WM01F is transferred to the area WR020 to WR03F. MOV (d, s, n) Transfer source area Transfer destination area 32 words of data are transferred. Page 5-85 The default value (H2020) is set in the range of WR0100 to WR01FE. COPY (d, s, n) Page Page + Page Page Page Page Page Page Page Page 5-97 Page 5-99 28-point type Output Input DIST (d, s, n) Page Page Page Page 5-104 Syntax of JMP, CJMP 1] LBL n with the same code number as the code number n of the JMP instruction is required. 6] An overlap of JMP instructions with the same code number is valid. Page Page Page 5-108 Syntax of FOR to NEXT 3] FOR and NEXT must be within the same area. 4] Use FOR to NEXT as a nest. Page Page Page Page Page 5-114 Syntax of SB n, RTS, INT n and RTI 7] Nesting of subroutines is allowed up to 5 levels. 5] It is also possible to program a subroutine with multiple entry points and one exit. 6] It is also possible to program a interrupt scan with many entry points and one exit. 5-115 5-116 5-117 5-118 5-119 Sample program Description R7E3 S R5 S 5-120 TRNS/RECV command return code table *2 Area overlapping error (H28) is not detected in the following case. 5-121 5-122 5-123 Page Page Page : : Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Chapter 6 I/O Specifications 6.1 I/O Assignment 6.2 External I/O Numbers Page 6.3 Internal Output Numbers Chapter 7 Programming 7.1 Memory Size and Memory Assignment 7.2 Programming Devices 7.3 Programming Methods Page Page Page 7.4 Program Transfer Page Chapter 8 High-speed counter, PWM / Pulse train output and Analogue I/O 8.1 Input/Output Function 8.1.1 Initial Setting for Special Input/Output Function 8.1.2 Operation Mode Chapter 8 High-speed counter, PWM / Pulse train output and Analogue I/O 8-3 8.1.3 Input/Output Setting *2 : Configuration of 10 point type. Bit: 1514131211109876543210 WRF071: abcdefghi jklmnop Initial value: 0000000000000000 Figure 8.2 Special internal output for setting detailed function 8.1.4 Input/Output Setting (Mode 10) 8.1.5 Special Output Operation in CPU STOP Status 8.1.6 Pulse / PWM Output adjustment 8.2 High-Speed Counter (Single-Phase) 8.2.1 Operation of Single-Phase Counter Page 8.2.2 Setting of Single-Phase Counter Bit: 1514131211109876543210 WRF057: a Not used bcdefghi 8.3 High-Speed Counter (Two-Phase Counter) 8.3.1 Operation of Two-Phase Counters Page Page 8.3.2 Setting of Two-Phase Counter Page 8.4 PWM Output 8.4.1 Operation of PWM Output 8.4.2 Setting the PWM Output Bit Description a PWM output: individual setting value change request 8.5 Pulse Train Output 8.5.1 Operation of Pulse Output 8.5.2 Setting of Pulse Output Page 8.6 Interrupt Input 8.7 Digital Filter 8.8 Potentiometers 8.9 Analogue Input 8.10 Analogue Output 8.11 Analogue Expansion unit Chapter 9 PLC Operation 9.1 RUN Start 9.1.1 Normal Scan Page 9.1.2 Periodical Scan 9.1.3 Interrupt Scan Page 9.1.4 Relationship of Each Scan Type : : 9.2 Online Change in RUN 9.3 Instantaneous Power Failure 9.4 Operation Parameter 9.5 Test Operation 9.6 Forced Set/Reset 9.7 Forced Output Chapter 10 PLC Installation, Mounting, Wiring 10.1 Installation L2 L1 P L C P L C Page 10.2 Wiring Page Page Page Page Page Chapter 11 Communication Specifications 11.1 Port function 11.2 Port 1 Micro processor 11.3 Port 2 11.4 General purpose port (Port 1,2) Micro processor 11.5 Modem Control Function 11.5.1 Configuration 11.5.2 AT Commands Page Page 11.6 Connecting to the Ports 11.6.1 Port 1 11-9 11.6.2 Port 2 Figure 11.7 Connection for 1:n station communication by RS-485 Figure 11.6 Connection for 1:n station communication by RS-422 (2) In case of RS-485 Page Chapter 12 Error Code List and Special Internal Outputs 12.1 Error Codes Page 12.2 Syntax and Assembler Error Codes 12.3 Operation Error Codes 12.4 Bit Special Internal Output Area Page Page Page 12.5 Word Special Internal Output Area Page Page Page Chapter 13 Troubleshooting 13.1 Error Display and Actions Page Page Page 13.2 Checklist when Abnormality Occurred 13.3 Procedures to Solve Abnormality 13-7 Power supply check Page 13-9 13-10 13-11 Data cannot be entered. I/O assignment error is generated, but data is read. 13-12 (e) The counter input does not function The CPU operates, but the input data is incorrect 13-13 13-14 The CPU operates, but output signals are not detected. I/O assignment error occurred, but output is normal. 13-15 13-16 (h) Peripheral units problem Peripheral units cannot be connected. Chapter 14 Operation Examples S T E P 1 Starting the LADDER EDITOR for Windows S T E P 2 Initialization Page v Page S T E P 3 Program Input Page Page Page S T E P 4 Checking Program Errors S T E P 5 Saving the Program S T E P 6 Program Transfer to CPU Page S T E P 7 Monitoring (Verifying the Operation) Page Chapter 15 Daily and Periodic Inspection Chapter 15 Daily and Periodic Inspections Chapter 15 Daily and Periodic Inspection - + A-1 Appendix 1 H-Series Instruction Support Comparison Chart [Basic instructions and sequence instructions] [Basic instructions and timers/counters] A-2 [Basic instructions and comparison boxes] No. Instruction format Instruction name A-3 [Arithmetic instructions] [Application instructions] (1/2) A-4 [Application instructions] (2/2) [Control instructions] A-5 [High-function module transfer instructions] * Supported by software version 1.30 (WRF051=H0130) or newer. [FUN instructions] (1/5) A-6 [FUN instructions] (2/5) A-7 [FUN instructions] (3/5) A-8 [FUN instructions] (4/5) A-9 [FUN instructions] (5/5) Appendix 2 Standards Appendix 2 Standards