Specifications

4 Communication settings and guide of HMI connecting with controller
Emerson EC20
Device
Bit Address
Word Address
Format
Notes
Input Relay X000-377 ------ OOO
Output Relay
Y000-377
------
OOO
Internal Relay
M0000-1999
------
DDDD
Special Relay SM000-255 ------ DDD
Step Relay S000-991
------
DDD
Timer T000-255
------
DDD
Counter C000-255
------
DDD
Data register ------ D0000-7999 DDDD
Special Register ------ SD000-255 DDD
Index Register ------ Z00-15 DD
Timer ------ T000-255 DDD
Counter ------ C000-199 DDD
Counter(double word) ------ C_Double200-255 DDD
Data register(double word)
------
D_Double0000-7999
DDDD
Special Register(double word)
------ SD_Double000-125 DDD
◎Cable Diagram
Emerson RS232 communication
HMI terminal
9pin D-SUB female\male
Controller port0
8 pin Mini Din (male)
5 TXD
4 RXD
3 GND
com2
3 TX
2 RX
5 GND
8 TX
7 RX
5 GND
com0/com1
TXD
RXD
GND
Controller
Port1 terminal
HMI terminal
9pin D-SUB female/male
com
2
3 TX
2
RX
5 GND
8 TX
7 RX
5 GND
com0/com
1
Emerson RS485-2 communication
Controller
Port1 terminal
HMI terminal
9pin D-SUB female/male
RS485-
RS485+
GND
com0/com1
1 RX-
6 RX+
5 GND
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