RS-232 communication data format
Baud rate ---------- 4800bps
Byte length ---------- 8bit
Stop bit ---------- 1bit
Parity check ---------- none
Dry Contact Communication Mode
Port description
NC
NC
GND
BATTERY LOW
OFF
GND
NC
NC
1
2
3
4
5
6
7
8
9
MAINS FAILURE
Pin 2: this pin turns from OPEN to CLOSE in the event of mains failure, its
normal state is OPEN;
Pin 5: this pin turns from OPEN to CLOSE in the event of battery low voltage, its
normal state is OPEN;
Pin 6: when ap5V voltage for more than 1 second, the UPS is turned off;
Pin 4: signal ground;
Pin 7: signal ground;
Other pins: unconnected.
Dry contact communication mode provides the following
functions:
Provide mains fault information in the event of mains failure;
Provide battery low voltage information when the battery
discharge is about to terminate;
Provide OFF control of UPS.
42 Appendix 1 Communication Port
E1-20010915-C-1.0
