Performing Commands Using Function Code 10H - GE 350 Communications Manual

PERFORMING COMMANDS USING FUNCTION CODE 10H

Performing Commands Using Function Code 10H
9–8
Modbus Address Hex Address
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
Commands can be performed using function code 16 as well as function code 5. When
using FUNCTION CODE 16, the Command Function register must be written with a value of
5. The Command Operation register must be written with a valid command operation
number. The Command Data registers must be written with valid data; this is dependent
upon the command operation.
For example, consider a request for slave 17 to perform command operation 1 (RESET): The
master/slave packets have the following format:
Table 9-9: MASTER/SLAVE PACKET FORMAT FOR PERFORMING COMMANDS
MASTER TRANSMISSION
SLAVE ADDRESS
FUNCTION CODE
DATA STARTING ADDRESS
Description
Force Virtual Input 5 State
Force Virtual Input 6 State
Force Virtual Input 7 State
Force Virtual Input 8 State
Force Virtual Input 9 State
Force Virtual Input 10 State
Force Virtual Input 11 State
Force Virtual Input 12 State
Force Virtual Input 13 State
Force Virtual Input 14 State
Force Virtual Input 15 State
Force Virtual Input 16 State
Force Virtual Input 17 State
Force Virtual Input 18 State
Force Virtual Input 19 State
Force Virtual Input 20 State
Force Virtual Input 21 State
Force Virtual Input 22 State
Force Virtual Input 23 State
Force Virtual Input 24 State
Force Virtual Input 25 State
Force Virtual Input 26 State
Force Virtual Input 27 State
Force Virtual Input 28 State
Force Virtual Input 29 State
Force Virtual Input 30 State
Force Virtual Input 31 State
Force Virtual Input 32 State
BYTES EXAMPLE
1 11
1 10
2 00 80
350 FEEDER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
CHAPTER 9: MODBUS FUNCTIONS
DESCRIPTION
message for slave 17
store multiple
setpoints
setpoint address 00
80