Specifications
App7-8 Appendix 7 V-Link
- Expansion code
Set the slot number of the CPU memory of the MITSUBISHI PLC or the CPU number of the
YOKOGAWA PLC.
Example:
MITSUBISHI Slot No. 0: 00H
MITSUBISHI Slot No. 1: 01H
YOKOGAWA CPU No. 1: 00H
YOKOGAWA CPU No. 2: 01H
* If no expansion code or port number is required, enter “00” (= 3030 in the ASCII code).
- Port number
1 : 1, Multi-link ....................................................Not used
Multi-drop............................................................PLC port number
Temperature controller........................................Temperature controller port number
- File No.
Specify the file number set in the [Memory Card Setting] dialog of the V-SFT editor.
- Record No.
Specify the record number set in the [Memory Card Setting] dialog of the V-SFT editor.
- System reserved
Enter “0” (= 30 in the ASCII code) for the number of bytes.
The number of bytes for “system reserved” varies depending on the model.
Example:
Sum Check Code (SUM): 2 bytes
Data is added up (SUM), and the lower one byte (8 bits) of the sum is converted into the 2-digit ASCII
code (hexadecimal).
A sum check code is shown below.
Example: Transmission mode: without CR/LF, with sum check
Command: 20 (data read)
Address: 10 words from $u1000 (03E8H)
When reading, a sum check will be performed as shown below.
Response Code: 2 bytes
[ACK]
This code is received at normal termination.
00H (3030: ASCII)
[NAK]
This code is received at abnormal termination. (ASCII)
For more information, refer to page App7-9.
Model Bytes Code (Hexadecimal) ASCII
V7 internal memory 10 0000000000H 30303030303030303030
STX V7 port number Command Read words Memory model Memory type Address System reserved ETX SUM
01H 20H 0AH 00H 00H 03E8H 0 0 0 0 0 0 0 0 0 0H B9H
02H 30H31H 32H30H 30H41H 30H30H 30H30H 30H 33H 45H 38H 30H 30H 30H 30H 30H 30H 30H 30H 30H 30H 03H 42H39H
02H + 30H + 31H + 32H + 30H + 30H + 41H + 30H + 30H + 30H + 30H + 30H + 33H + 45H + 38H
+ 30H + 30H + 30H + 30H + 30H + 30H + 30H + 30H + 30H + 30H + 03H = 4B9H