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I / O system, 2 analog outputs, 0 to +5 VDC, 12 bits, manufacturer code: ST4622..

I / O system, 1 digital input, high speed counter, 5 VDC, manufacturer code: ST5101..

I / O system, 1 digital input, high speed counter, 24 VDC, manufacturer code: ST5111..

I / O system, 2 inputs high speed counter, 24VDC, manufacturer code: ST5112..

I / O system, 4 inputs high speed counter, 24VDC, manufacturer code: ST5114..

I / O system, 1 serial interface, RS-232C, manufacturer code: ST5211..

I / O system, 2 serial ports, RS-232C, manufacturer code: ST5212..

I / O system, 1 serial interface, RS-422, manufacturer code: ST5221..

I / O system, 1 serial interface, RS-485, manufacturer code: ST5231..

I / O system, 2 serial ports, RS-485, manufacturer code: ST5232..

I / O system, 1 SSI interface, manufacturer code: ST5351..

I / O system, 2 PWM outputs, 2 A / 24 VDC, source, manufacturer code: ST5422..