GN-9289 User Manual
Page 41 of (70)
G-series GN-9289 Modbus TCP_UDP Rev. 1.01.docx
Sub-function 0x0064(100) Return Slave ModBus, Internal Bus Status
The response data field returns the status of ModBus and Internal Bus addressed to the remote device.
This status values are identical with status 1word of input process image.
Sub-
function
Data Field (Request)
Data Field (Response)
Description
0x0064(100)
0x0000
ModBus, Internal Bus Status
Same as status 1word
Sub-function 0x0065(101) Return Slave Watchdog Error Count
The response data field returns the quantity of watchdog error addressed to the remote device since its last
restart, clear counters operation, or power–up.
8.2.8.
15 (0x0F) Write Multiple Coils
This function code is used to force each coil in a sequence of coils to either ON or OFF in a remote device.
The Request PDU specifies the coil references to be forced. Coils are addressed starting at zero. A logical '1'
in a bit position of the field requests the corresponding output to be ON. A logical '0' requests it to be OFF.
The normal response returns the function code, starting address, and quantity of coils forced.
Request
Field name
Example
Function Code
0x0F
Starting Address Hi
0x10
Starting Address Lo
0x00
Quantity of Outputs Hi
0x00
Quantity of Outputs Lo
0x0A
Byte Count
0x02
Output Value#0
0x55
Output Value#1
0x01
Response
Field name
Example
Function Code
0x0F
Starting Address Hi
0x10
Starting Address Lo
0x00
Quantity of Outputs Hi
0x00
Quantity of Outputs Lo
0x0A
In case of address 0x1015~0x1000 output bit value: 00000000_00000000changes to 00000001_01010101.
Sub-
function
Data Field (Request)
Data Field (Response)
Description
0x0065(101)
0x0000
Watchdog Error Count
