Chapter 9: Message transfers
Monitoring relay (COM = 20(H))
[Format]
ËCommand
COM DSEG DADRL DADRH BLOC
ËResponse
COM RSLT DSEG DADRL DADRH BLOC DATA
COM | = 20(H) |
|
DSED | = Segment (00 to 07, 10 to 2C(H)) | See page |
DADRL, H | = Byte address (0000(H) to FFFF(H)) | See page |
BLOC | = Bit position (00(H) to 07(H)) |
|
DATA | = Read data (00(H): OFF, 01(H): ON) |
|
[Function]
- Read the bit data (relay) shown in DSEG, DADR, and BLOC.
[Execution condition]
-Write enable mode : Mode 0, mode 1 and mode 2
-PC operation status : Stopping, operating
[Example]
-Monitor the ON/OFF status of relay number 04033.
ËCommand
| 20 | 00 |
| 03 |
| 01 |
|
| 03 |
|
|
|
|
|
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| File 0 |
|
| File | address |
|
|
|
|
|
| Bit 3 |
|
|
|
|
| 9 | ||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||
|
|
|
|
| 000403(8) = 0103(H) |
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Relay number 04033 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||
Ë Response |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ON | |||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 20 | 00 |
| 00 |
| 03 |
|
| 01 |
|
|
| 03 |
| 01 |
|
|
| ||||||||
|
|
|
|
|
|
|
|
|
| File address |
|
|
|
|
| Bit 3 | ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||
|
|
|
|
| File 0 |
|
|
|
|
|
|
|
| |||||||||||||
|
|
|
|
| 000403(8) | = 0103(H) |
|
|
|
|
|
|
|
|
|
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||
Relay number 04033