Yokogawa Touch Screen GP20 - Manual (Page 326)

4-6
IM 04L51B01-01EN
Example 3
Load the 16-bit signed integer values assigned to registers 30001 and 30002 of instrument
B to C001 and C002. Only the smallest register number need be specified in commands.
30001 16-bit signed integer
16-bit signed integer
30002
C001
C002
Register of instrument B Communication channel data
Command setting
Setup Item Value
Client command number 3
Command setting Type Read
Server 2
Data type INT16
Register 30001
Channel type Communication channel
First-CH C001
Last-CH C002
Example 4
Load the 32-bit floating point values assigned to registers 30005 and 30006 (little endian) of
instrument B to C004. Only the smallest register number need be specified in commands.
30005 Lower bytes
Higher bytes 30006
C004
32-bit floating point
Register of instrument B Communication channel data
Command setting
Setup Item Value
Client command number 4
Command setting Type Read
Server 2
Data type FLOAT_L
Register 30005
Channel type Communication channel
First-CH C004
Last-CH C004
Writing Data to a Server
Example
Write the measured value from channel 0001 to register 40001 of instrument A.
16-bit signed integer
I/O channel Register of instrument A
0001 40001
Command setting
Setup Item Value
Client command number 5
Command setting Type Write
Server 1
Data type INT16
Register 40001
Channel type I/O channel
First-CH 0001
Last-CH 0001
4.2 Using Modbus/TCP to Enable the GX/GP to Read Data from and Write Data to Other Devices (Modbus client function)