Omron SYSDRIVE MX SERIES User Manual page 162

4-2 Function Mode
Query
No. Field name
1 Slave address
2 Function code
Register start number
3
(MSB)
Register start number
4
(LSB)
Number of holding
5
4
registers (MSB)
Number of holding
6
registers (LSB)
7 CRC-16 (MSB)
8 CRC-16 (LSB)
*1. Broadcasting cannot be performed.
*2. Data is transferred by the number of data bytes. In this example, 6 bytes are used to return the content of
three holding registers.
Read the data received in response, as follows:
Holding register start
Refer to "<Exception Response>" (page 4-74) if the holding register content reading command has
not been performed normally.
<Writing Into the Coil [05h]>
Writes into one coil.
The following table shows the coil status change.
Change data (MSB)
Change data (LSB)
(Example)
Issue the RUN command to the Inverter with slave address 10.
For running, "03" must be set to A002. The coil number of the RUN command is "1".
4-71
Example
(HEX)
*1
05
03
00
19
00
03
D5
88
Response buffer 4
+0
number (MSB)
Response data 00h
Trip cause Overvoltage trip
OFF → ON
FFh
00h
Response
No.
1
2
3 Number of data bytes
4
5
Register start number +1
6
Register start number +1
7
Register start number +2
8
Register start number +2
9
10
11
5 6
+0 +1
(LSB) (MSB)
07h 00h
Undervoltage trip
Coil status
ON → OFF
00h
00h
Example
Field name
Slave address
Function code
*2
Register start number
(MSB)
Register start number
(LSB)
(MSB)
(LSB)
(MSB)
(LSB)
CRC-16 (MSB)
CRC-16 (LSB)
7 8
+1 +2
(LSB) (MSB)
09h 00h
No trip
(HEX)
05
03
06
00
07
00
09
00
FF
36
37
9
+2
(LSB)
FFh