2 Overview
MY Series (10kVA-40kVA) UPS
User Manual
12
The gate controlled switch release automatically when the maintenance breaker cover is removed and
closes automatically when the cover is locked back.
2.1.4 Communication
The supported communication method of this series UPS include RS485, communication dry contact,
RS232+Dry contact card, RS485+Dry contact card, communication protocol transition card and
SNMP.
Table2-3
Communication method correspondence with hardware port
Communication way
Communication port
RS485
RS485
Dry contact
Dry contact 1: output dry contact;
Dry contact 2: input dry contact (EPO+IN.1)
RS232+Dry contact card
Slot 1 (optional)
RS485+ Dry contact card
Slot 1 (optional)
Communication protocol transition card
Slot 1 (optional)
SNMP
Slot 1 (optional)
RS485
The UPS adopt RS485 series port to communicate with PC. The corresponding pin relationship of
RS485 port between UPS and PC is as shown Table2-4.
Table2-4
The corresponding pin relationship of RS485 port between of UPS and PC
RS485 port of UPS
RS485 port of PC
A (+)
A (+)
B (-)
B (-)