Omron M1 Series User Manual page 667

No.
8
Changed data (MSB)
9
Changed data (LSB)
10 CRC-16 (MSB)
11 CRC-16 (LSB)
*1. During a broadcast, no response will be sent back.
*2. Note that the coil start address is 0002 hex, which is 1 less than the coil number 0003 hex: Coil start
address = Coil number - 1.
*3. Since written data occupies both MSB and LSB as a set, make the data have an even number of bytes
by adding one byte of padding data, even if you actually need to change an odd number of bytes.
 Response
No.
1
Slave address
2 Function code
3
Coil start address (MSB)
4
Coil start address (LSB)
5 Number of coils (MSB)
6 Number of coils (LSB)
7 CRC-16 (MSB)
8 CRC-16 (LSB)
*1. During a broadcast, no response will be sent back.
*2. Note that the coil start address is 0002 hex, which is 1 less than the coil number 0003 hex: Coil start
address = Coil number - 1.
You can enable terminal commands using communications by enabling "4. RS-485 communication"
in 1st RUN Command Selection (F02)/2nd RUN Command Selection (E102). If enabling terminal
commands using RS-485 communications, refer to 7-2-1 Multifunction Input Selection on page
7-26 for the enable/disable relationship with the terminal block.
Multifunction input is monitored using a control circuit terminal for terminal block input (I/O) (monitor
mode 4_00), and communications control signal for communications input (I/O) (monitor mode
4_01).
If the Write to Multiple Coils function is not executed normally, refer to 8-5-9 Exception Response
on page 8-20.
(Ex- When the status of coils from coil number 0001 to 000D hex is written, the order of data is as shown
am- below. Data 1 is the initial byte data to send.
ple)
Data 1 0008 hex
Data 2
M1 Series Standard Type User's Manual (I669)
Field name Example (hex)
*3 17
*3 00
EB
A2
Field name Example (hex)
*1
01
0F
*2
00
*2 02
00
0C
F4
0E
bit 7 bit 6 bit 5
0007 hex 0006 hex
- -
Remarks
Input terminal
D7, D6
← 17 hex = 0000 0001 0111
Reserved
bit 4 bit 3
0005 hex 0004 hex
- 000D hex 000C hex
8 Communications Functions
Input terminal
D5 to D1
bit 2 bit 1
0003 hex 0002 hex
000B hex 000A hex
8
bit 0
0001 hex
0009 hex
8-17