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3-32
33..4444::
TTyyppee
FF4444
DDiiggiittaall
IInnppuutt
MMoodduullee
DDaattaa
SSttaattuuss
Q
Length: 1 Register (2 bytes)
Q
This register has two bytes. Each byte has eight bits. The bits in these bytes are associated with the
status of the data received from the Digital Input Modules as follows:
Digital Input Module Data Status:
A bit value of 0 means that the data from this Digital Input Module is not yet valid. Either the
module is not present or has not yet been polled.
A bit value of 1 means that the data from this Digital Input Module has been polled at least once
and is valid.
Example:
Register 06111, Digital Input Module Data Status, might contain the following data:
Bit Point Meaning
15 (MSB) 0 Status of Data from Digital Input Module 1 (Modbus Register 0AD5H)
14 1 Status of Data from Digital Input Module 2 (Modbus Register 0AE6H)
13 2 Status of Data from Digital Input Module 3 (Modbus Register 0AF7H)
12 3 Status of Data from Digital Input Module 4 (Modbus Register 0B08H)
11-0 (LSB) Undefined
Digital Input
Module
234
Point 123
Bits 00000000000000
Status ---
Interpretation
Addr
Value
Bytes 00H
01
1
OK
80H
06111
8000H
Data from Digital Input Module 1 (Register 0AD5H) is valid,
data from Digital Input Modules 2-4 are not valid.