Modbus Wiring For The Slave Port - Advanced Energy AE 75TX Installation And Operation Manual

Advanced Energy® AE ?STX and AE 1 OOTX Inverters
Figure 6-5. Daisy chain layout for RS-485 network: option A
SINGlEPOINT
CABlE5"EL.0
EARlH GROUND ~ + •
"' 0 0
ISOLATED, SELN'OWERED
MASTEROE\'ICE
Figure 6-6. Daisy chain layout for RS-485 network: option B
r----l-d---+-t-+-1--'<::f-~-'<::f--"f"+-ir+++--1::7---------'o>---++++-"'<7-~ 1
i2
4648
Figure 6-7. Daisy chain layout for RS-485 network: option C
Important
When multiple devices are wired to the network, the network shield must be
te1minated to eai1h ground at one point on the network, typically at the
beginning or the end. For device connections, the shield must be rewired to
provide a continuous shield and isolated from ground.
Modbus Wiring for the Slave Port
The communications interface includes two Modbus slave po11 tenninal blocks. The
two Modbus slave po11 te1minal blocks can be used in an in-and-out configuration for
daisy-chain networking. The two te1minal blocks ai·e electiically bonded on the PCB.
Therefore, it does not matter which one is used or the order in which they ai·e
connected. The following illustration provides an example of how the two te1minal
blocks can be used.
570-1001793-0SB Data Monitoring and Controls
6-9