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Rockwell Automation Publication 5069-UM003B-EN-P - January 2020
Appendix A
Module Tags
Output Tags
Table 31 - Modbus Slave Output Tags
Name
Data Type
Definition
Valid Values
O
x
.Slave.Run
BOOL
Channel’s operating state
• 0 = Idle
• 1 = Run
(5)
O
x
.Slave.SequenceNumber
INT
Sequence number for updating slave data from controller
• -32768…+32767
O
x
.Slave.HoldingRegister[x]
(1)
INT
Location of holding register values defined by user for the serial
module
• -32768…+32767
O
x
.Slave.Coil[x]
(2)
SINT
Location of slave coil values defined by user for the serial module • -128…+127
O
x
.Slave.InputRegister[x]
(3)
INT
Location of input register values defined by user for the serial
module
• -32768…+32767
O
x
.Slave.DiscreteInput[x]
(4)
SINT
Location of discrete input values defined by user for the serial
module
• -128…+127
(1) X represents any possible value 0…99
(2) X represents any possible value 0…15
(3) X represents any possible value 0…99
(4) X represents any possible value 0…15
(5) The Run bit is to start the update of the output (O) tags values into the Serial module. The serial module will always respond to the external Modbus master, but they will be using the old values if the
RUN bit is not enabled but new data is on the output O tag.
