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SM-I/O Plus
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294 Unidrive SP Advanced User Guide
www.controltechniques.com Issue Number: 10
This word is used to determine the status of the digital I/O by reading one parameter. The bits in this word reflect the state of Pr x.03 to Pr x.10.
This parameter changes the logic polarity for digital inputs, but not digital outputs or relay outputs.
x.20 Digital I/O read word
RO Uni NC PT US
Ú
0 to 511
Ö
Update rate: 8ms x number of dumb modules
Bit Digital I/O Parameter
0 T2 (I/O 1) x.09
1 T3 (I/O 2) x.10
2 T4 (I/O 3) x.03
3 T6 (DI 4) x.04
4 T7 (DI 5) x.05
5 T8 (DI 6) x.06
6 T21/T22 (Relay 1) x.07
7 T22/23 (Relay 2) x.08
x.21 T2 digital I/O 1 source/destination
x.22 T3 digital I/O 2 source/destination
x.23 T4 digital I/O 3 source/destination
x.24 T6 digital input 4 destination
x.25 T7 digital input 5 destination
x.26 T8 digital input 6 destination
x.27 Relay 1 source
x.28 Relay 2 source
RW Uni DE PT US
Ú
Pr 0.00 to Pr 21.51
Ö
Pr 0.00
Update rate: Read on drive reset
x.29 Input polarity select
RW Bit DE PT US
Ú
OFF (0) or On (1)
Ö
On (1)
Update rate: Background read
Pr x.29=0 (negative logic) Pr x.29=1 (positive logic)
Inputs <5V = 1, >15V = 0 <5V = 0, >15V = 1
Non-relay outputs 1 = >15V (high side drivers only) 1 = >15V (high side drivers only)
Relay outputs 0 = open, 1 = closed 0 = open, 1 = closed
x.31 T2 digital I/O 1 output select
x.32 T3 digital I/O 2 output select
x.33 T4 digital I/O 3 output select
RW Bit US
Ú
OFF (0) or On (1)
Ö
OFF (0)
Update rate: Background read
Programmable digital inputs and output
Terminal Input
Destination
/ Source
State Invert
Output
select
2 I/O 1 Pr x.21 Pr x.09 Pr x.11 Pr x.31
3 I/O 2 Pr x.22 Pr x.10 Pr x.12 Pr x.32
4 I/O 3 Pr x.23 Pr x.03 Pr x.13 Pr x.33
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