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ZXDU58 B900 Product Description
Interface
Description
X7
Input relay 1 and 2
X8
Input relay 3 and 4
The four input relays can be customized by the user for alarm
input.
The default alarm status of the input relays in the CSU are
“close”.
Output relay 1 - Output
relay 7
l
The output relays 1 to 7 correspond to the software codes
A1 to A7 in the CSU.
l
For the default output relays for the alarms, refer to the
Alarm List.
l
Users can customize these output relays for alarm output.
X9
Output relay 8
This output relay is reserved for CSU fault.
Communication interfaces
X10
RS485/RS422
The interface for RS485/RS422 communication.
X11
RS232
The interface for RS232 communication.
2-8
SJ-20121116145308-001|2012-12-05 (R1.0)
ZTE Proprietary and Confidential