Emerson Mentor MP Advanced User's Manual page 110

Parameter
Menu 8
structure
8.21 T24 digital I/O 1 source/destination
8.22 T25 digital I/O 2 source/destination
8.23 T26 digital I/O 3 source/destination
8.24 T27 digital input 4 destination
8.25 T28 digital input 5 destination
8.26 T29 digital input 6 destination
Bit SP
Coding
Default See table
Range Pr 0.00 to Pr 22.99
Update rate Read on drive reset
8.27 Relay / source
Bit SP
Coding
Default See table
Range Pr 0.00 to Pr 22.99
Update rate Read on drive reset
8.29 I/O polarity select
Bit SP
Coding
1
Default On (1)
Range 2
Update rate Background read
This parameter changes the logic polarity for digital inputs and digital outputs, but not the enable input, the relay output and the 24V output.
Pr 8.29 = 0 (negative logic
Inputs
Non-relay Outputs
Relay outputs
24V output (T22)
8.30 Open collector output
Bit SP
Coding
1
Default 0
Update rate Background read
When this parameter = 0 the digital outputs are in push-pull mode.
When this parameter = 1 either the high-side drive (negative logic polarity) or the low-side driver (positive logic polarity) is disabled.
This allows outputs to be connected in a wire-ORed configuration.
110
Keypad and
Parameter x.00
display
FI DE Txt VM DP ND
1 2
FI DE Txt VM DP ND
2
FI DE Txt VM DP ND
inputs and outputs)
<5V = 1
>15V = 0
On (1) = <5V
Off (0) = >15V
Off (0) = open
On (1) = closed
Off (0) = 0V
On (1) = 24V
FI DE Txt VM DP ND
www.controltechniques.com
Parameter description
format
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
Pr 8.29 = 1 (positive logic
inputs and outputs)
<5V = 0
>15V = 1
On (0) = <5V
Off (1) = >15V
Off (0) = open
On (1) = closed
Off (0) = 0V
On (1) = 24V
RA NC NV PT US RW BU
1
Advanced parameter Serial comms
descriptions protocol
PS
1 1
PS
1 1
PS
1 1
Pr 8.29 = 2 (positive logic inputs
and negative logic outputs)
<5V = 0
>15V = 1
On (1) = <5V
Off (0) = >15V
Off (0) = open
On (1) = closed
Off (0) = 0V
On (1) = 24V
PS
1
Mentor MP Advanced User Guide
Performance
Issue Number: 1