Omron RX Series - Page 490

8 Communications Functions
8 - 14
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
Writes data to the specified holding register.
Example
To write 50 Hz to the inverter with slave address 5 as the 1st Base Frequency (A003) value.
Because the holding register 1203 hex for the 1st Base Frequency (A003) has a data resolution of 1 Hz,
to set 50 Hz, set the written data to 50 (0032 hex).
Query
Response
*1 During a broadcast, no response will be sent back.
*2 Note that the register start number is 1202 hex, which is 1 less than the register number 1203 hex.
Note that, except for F001, changing the parameter value on the data display does not update the
displayed data realtime.
To view the updated value, once return to the parameter display and then display the data again.
If the Write to Holding Register function is executed normally, refer to the “Exception Response”
section.
Write to Holding Register [06 hex]
No. Field name Example [hex] Remarks
1
Slave address
*1
05
2 Function code 06
3
Register start number (MSB)
*2
12
(Register address) = (Register number) – 1
4
Register start number (LSB)
*2
02
5 Written data (MSB) 00
0032 hex → 50 decimal → 50 Hz
6 Written data (LSB) 32
7 CRC-16 (MSB) AD
8 CRC-16 (LSB) 23
No. Field name Example [hex]
1 Slave address 05
2 Function code 06
3 Register start number (MSB) 12
4 Register start number (LSB) 02
5 Written data (MSB) 00
6 Written data (LSB) 32
7 CRC-16 (MSB) AD
8 CRC-16 (LSB) 23