Minuteman UPS MCP 1000i - Manual (Page 15)

COMMUNICATION INTERFACE
(1) RS232
NC----------------- 1 NC----------------- 6
TXD--------------- 2 NC----------------- 7
RXD--------------- 3 NC----------------- 8
NC----------------- 4 NC----------------- 9
Signal Ground--- 5
Pin2: UPS transmits serial data to computer.
Pin3: UPS receives serial data from computer.
Pin5: Signal ground.
The RS232 communication port provides the following features:
¨ Monitoring charger status
¨ Monitoring battery status and condition
¨ Monitoring inverter status
¨ Monitoring UPS status
¨ Monitoring the utility status
¨ Remote control shutdown of UPS
All information is provided in ASCII format.
HARDWARE:
BAUD RATE ————————— 2400 BPS
DATA LENGTH ———————— 8 bits
STOP BIT ——————————-1 bit
PARITY ———————————-NONE
CABLING:
COMPUTER UPS
RX (Pin2)
¬
TX (Pin2)
TX (Pin3)
®
RX (Pin3)
GND (Pin5)
®
GND (Pin5)
(1) DRY CONTACT
NC----------------- 1 Low Battery-------- 6
NC----------------- 2 NC----------------- 7
Shut Down------- 3 NC----------------- 8
AC Fail------------ 4 NC----------------- 9
Signal Ground--- 5
Pin4: Output signal transfers from HIGH to LOW during utility failures. The pin is normally
HIGH.
Pin6: Output signal transfers from HIGH to LOW upon battery low. The pin is normally HIGH.
Pin9: The UPS will shut down when HIGH remains constant for at least 3.8 seconds.
Pin5: Signal ground.
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