SIP-2
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USER GUIDE - Rev. 3 (January 2018)
2.5
DIGITAL INPUTS
Instead of an additional serial port (COM 2), the equipment can be ordered with two digital
inputs, galvanically isolated, which can be managed via SNMP, in the same connector.
As is shown in FIGURE 13, the said inputs are arranged in the standard DB9 female
connector on the front plate, identified as DIGITAL INPUTS.
Its use is indicated below.
Pin
Use
2
Input 1 -
3
Input 1 +
7
Input 2 -
8
Input 2 +
Upon request, the equipment can have two digital inputs and two digital outputs. In that
case, the use of contacts is the following.
Pin
Use
(upon request)
1
Input 1 +
2
Input 1 -
3
Input 2 +
4
Input 2 -
6
Output 1 +
7
Output 1 -
8
Output 2 +
9
Output 2 -
