iSMA-B-MINI/MIX Modbus User Manual
www.ismacontrolli.com
DMP262en | 1st Issue rev. 8 | 05/2022
page 38 of 107
7 LocalIO Registers
The following sections describe the BACnet objects dedicated to inputs and outputs of
the iSMA-B-MINI/MIX modules.
7.1 Universal Input Registers
7.1.1 Status of Universal Inputs Working as Digital Inputs (30017)
This 16-bit register contains information about the status of digital inputs (dry contacts). If
the input is shorted to the ground, the corresponding bit value is set to 1 in accordance
with the following table:
No. of Bit in Register
No. of Universal Input
0
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
Table 14. UI register operating DI for MIX38 and MIX38-IP
7.1.2 Universal Input Voltage (Current) Measure 1-8 (30071, 30073,
30075, 30077, 30079, 30087, 30089, 30091)
These 16-bit registers contain the results of measuring the voltage for each input. The
result is expressed in millivolts.
The results of measuring the current for each input are stored in the same registers. In
such case, the current value has to be calculated according to the equation:
I = register value / 200 [mA]
7.1.3 Universal Input Temperature Measurement 1-8 (30072, 30074,
30076, 30078, 30080, 30095, 30097, 30099)
In these 16-bit registers the result is expressed in Celsius degrees
•
10.
