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PROMUX – I/O Modules

PM16DI - 16 Digital Input Module


The PM16DI module is a 16 channel digital input module. The inputs are isolated from the logic by bi-directional opto-couplers. The inputs are divided into 2 isolated groups of 8 inputs each. This allows for many configurations in which the input module may be used. One such configuration could be where one group is connected as common positive and the second group connected as common negative.

The counters operate in three modes.

In mode 0: All the counters are disabled.

In mode 1: The counters are 32 bit counters allowing a count value from 0 to 4294967295. The count value can be cleared by writing a zero to the associated registers or preset to any other value using the same method.

In mode 2: The inputs are connected as up/down counters. Input 1 will increment counter 1 whilst input 2 decrements counter1. In the same way, inputs 3&4 operate counter 2, inputs 5&6 operate counter 3 and inputs 7&8 operate counter 4,etc.

When the input filter is configured for > 10ms (Input Filter > 1), then the 16 counters are saved in non-volatile memory and the count value will be saved when the power fails.

 

PM16DI – 16 DIGITAL INPUTS
Digital Inputs  16
Digital Counters  16
Counter Resolution 32 Bit
Counter frequency 1 KHz (max)
Pulse width 500uSec (min)
Counter Mode UP or UP/DOWN
Digital input 0 level 0 to +6.5Vdc
Digital input 1 level +12Vdc to +24Vdc
Input Impedance 2200 ohms
Input filter 6553 msec. (max)
Isolation (Field & Logic) 1500 V RMS
Status Indication LED per channel



























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PM16DI - 16 Digital Input Module
 
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