Rockwell Automation Publication 871TM-UM002C-EN-P - October 2017
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Appendix
B
Device Parameters
When using Explicit Messages to Read/Write parameter values from/to the
871TM, you must know the Index Number, Data Type, and Size of the Data
that is transmitted/received in the message. The attached table provides this
information for each of the Device Parameters.
Identification
Parameter
Parameter Name
Index
(Hex(Dec)
Subindex
(Hex(Dec)
Access
Default
Allowed Value
Data Type (Length)
Direct Parameters 1.Vendor ID 2
0x00(0)
0x09(9)
RO
2 = Allen Bradley
2 = Allen Bradley
UIntegerT, bitLength = 8, bitOffset = 56
Direct Parameters 1.Device ID 3
0x00(0)
0x012(12)
RO
Blank
Depends on Device Variant
UIntegerT, bitLength = 8, bitOffset = 32
Parameter Name
Index
(Hex(Dec)
Subindex
(Hex(Dec)
Access
Default
Allowed Value
Data Type (Length)
.Polarity (changed viewable in
SIO mode only)
0x01(1)
0x03(3)
RW
0 = Not Inverted
(N.O.)
0 = Not Inverted
(N.O.)
1 = Inverted (N.C.)
871TM - BooleanT, bitOffset = 84
Enable
0x01(1)
0x04(4)
RW
0 = On
0 = On,
1 = Off
871TM - BooleanT, bittOffset = 82
Mode
0x01(1)
0x05(5)
RW
0 = No Timer
0 = No Timer,
1 = Stretch On,
2 = On Delay,
3 = Delay and Stretch On
871TM - UIntegerT, bitOffset = 80,
bitLength = 2
Multiplier
0x01(1)
0x02(2)
RW
0
0...63
871TM - UIntegerT, bitOffset = 88,
bitLength = 6
Base Time
0x01(1)
0x01(1)
RW
0 = 0.1 ms
0 = 0.1 ms,
1 = 0.4 ms,
2 = 1.6 ms,
3 = 6.4 ms
871TM - UIntegerT, bitLength = 2,
bitOffset = 94