Write Multiple Coils - ICP DAS USA IR-310-RM User Manual

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5.3 FC15 (0x0F) Write Multiple Coils
For multiple relays control.
‧Request
Byte order Item
00 Address
01 Function code
02 ~ 03 Starting channel
number
04 ~ 05 Output channel
number
06 Byte count
07 Output value
‧Response
Byte order Item
00 Address
01 Function code
02 ~ 03 Starting channel
number
04~05 Input channel
number
Example:
Command the RL1 and RL8 change to ON.
Request (hex): 01 05 00 08 FF 00 0D F8 ("0D F8" is CRC16)
Response (hex): 01 05 00 08 FF 00 0D F8 ("0D F8" is CRC16)
IR-310-RM, IR Controlled 10-ch High Power Relay Module (Ver. 1.1, Jul/02/2013) 32
Size Value
1 Byte 1 ~ 247
1 Byte 0x0F
2 Bytes 0x0000 ~ 0x0009 for relay status.
2 Bytes 0x0000 ~ 0x000A
1 Bytes 1 or 2
1 Bytes A bit corresponding to a channel.
Bit value 1 => ON; Bit value 0 => OFF.
Size Value
1 Byte 1 ~ 247
1 Byte 0x0F
2 Bytes The same as byte 02~03 of the request.
2 Bytes The same as byte 04~05 of the request.