Page
15
Rear Panel Connectors
The following figure and tables detail the connections of the General Purpose Inputs
(GPI) and RS-485 connectors on the rear panel. The tables are also silkscreened on
the rear panel of the unit for your convenience.
Table 2-2: GPI Input Connections
To activate a GPI, connect its associated pin (1-6) to ground (8).
Figure 2-4: GPI Input & RS-485 I/O Pin-Out
Table 2-3: RS-485 I/O Connections
Pin
RS-485 Terminal Name
1, 2
GND
3
Tx- (pair A)
4
Rx+ (pair B)
5
Rx- (pair B)
6
Tx+ (pair A)
7, 8
NC
Pin
GPI Terminal Name
1
GPI 1
2
GPI 2
3
GPI 3
4
GPI 4
5
GPI 5
6
GPI 6
7
NC
8
GND
Содержание HDM-215-3G-TT
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