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v10.0.1.x for R2026a
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IO424 Pin Mapping

IO424 Pin Mapping — Reference information about the I/O module connector

IO424-R (No Synchro) Pin Mapping

PinSignal (Resolver Mode)Signal (LVDT Mode) PinSignal (Resolver Mode)Signal (LVDT Mode)
1Channel 1 SIN (+)Channel 1 La (+) 26Channel 1 SIN (-)Channel 1 La (-)
2Channel 1 COS (+)Channel 1 Lb (+)27Channel 1 COS (-)Channel 1 Lb (-)
3Channel 2 SIN (+)Channel 2 La (+)28Channel 2 SIN (-)Channel 2 La (-)
4Channel 2 COS (+)Channel 2 Lb (+)29Channel 2 COS (-)Channel 2 Lb (-)
5Channel 3 SIN (+)Channel 3 La (+)30Channel 3 SIN (-)Channel 3 La (-)
6Channel 3 COS (+)Channel 3 Lb (+)31Channel 3 COS (-)Channel 3 Lb (-)
7Channel 4 SIN (+)Channel 4 La (+)32Channel 4 SIN (-)Channel 4 La (-)
8Channel 4 COS (+)Channel 4 Lb (+)33Channel 4 COS (-)Channel 4 Lb (-)
9Channel 1 EXC_IN (+)34Channel 1 EXC_IN (-)
10Channel 2 EXC_IN (+)35Channel 2 EXC_IN (-)
11Channel 3 EXC_IN (+)36Channel 3 EXC_IN (-)
12Channel 4 EXC_IN (+)37Channel 4 EXC_IN (-)
13Ground38Ground
14Channel 1 EXC_OUT (+)39Channel 1 EXC_OUT (-)
15Channel 2 EXC_OUT (+)40Channel 2 EXC_OUT (-)
16Channel 3 EXC_OUT (+)41Channel 3 EXC_OUT (-)
17Channel 4 EXC_OUT (+)42Channel 4 EXC_OUT (-)
18-43-
19-44-
20-45-
21-46-
22-47-
23-48-
24-49-
25-50-
[Note]Note

Since resolver, LVDTs, and synchros are floating devices, the Ground pins shown are not strictly necessary, but could be of use when the module is used with non-floating sensors or ground referenced equipment. Unused inputs can be left open.

Applications that use the excitation outputs must connect these externally to the excitation inputs.

The excitation outputs do not float, but are ground referenced. The EXC_OUT+/- signals are each positive voltages in reference to ground.

IO424-RS (With Synchro) Pin Mapping

PinSignal (Resolver Mode)Signal (LVDT Mode) PinSignal (Resolver Mode)Signal (LVDT Mode)
1Channel 1 SIN (+)Channel 1 La (+) 26Channel 1 SIN (-)Channel 1 La (-)
2Channel 1 COS (+)Channel 1 Lb (+)27Channel 1 COS (-)Channel 1 Lb (-)
3Channel 2 SIN (+)Channel 2 La (+)28Channel 2 SIN (-)Channel 2 La (-)
4Channel 2 COS (+)Channel 2 Lb (+)29Channel 2 COS (-)Channel 2 Lb (-)
5-30-
6-31-
7-32-
8-33-
9Channel 1 EXC_IN (+)34Channel 1 EXC_IN (-)
10Channel 2 EXC_IN (+)35Channel 2 EXC_IN (-)
11-36-
12-37-
13Ground38Ground
14Channel 1 EXC_OUT (+)39Channel 1 EXC_OUT (-)
15Channel 2 EXC_OUT (+)40Channel 2 EXC_OUT (-)
16-41-
17-42-
18Channel 3 Syn_EXC_IN (+)43Channel 3 Syn_EXC_IN (-)
19Channel 4 Syn_EXC_IN (+)44Channel 4 Syn_EXC_IN (-)
20Channel 3 S145-
21Channel 3 S246-
22Channel 3 S347-
23Channel 4 S148-
24Channel 4 S249-
25Channel 4 S350-
[Note]Note

Since resolver, LVDTs, and synchros are floating devices, the Ground pins shown are not strictly necessary, but could be of use when the module is used with non-floating sensors or ground referenced equipment. Unused inputs can be left open.

Applications that use the excitation outputs must connect these externally to the excitation inputs.

The excitation outputs do not float, but are ground referenced. The EXC_OUT+/- signals are each positive voltages in reference to ground.