CoolAutomation CoolMasterNet - RS485 Interface

Connections
CoolMasterNet PRM Rev 0.7
10
www.coolautomation.com
© 2017 CoolAutomation
RJ45 connector comprises Link and Activity indication LEDs providing following statuses.
LED
Color
Function
Link Led
Green
ON for good link
OFF for no link
Activity Led
Orange
BLINK for Tx/Rx Activity
Ethernet port is used by a number of protocol modules available in CoolMasterNet
· ASCII I/F (via ASCII I/F IP Server)
· ModBus IP
· HDL buspro IP
· SDDP
· CoolRemote
Network setting of the CoolMasterNet are controlled with ifconfig command.
4.4.1 ASCII I/F IP Server
ASCII I/F IP Server referenced as aserver is a classic row TCP/IP socket server. Aserver has following default
characteristics:
Maximal number of simultaneous connections
4
Default TCP/IP port
10102
Prompt character >
enabled
Aserver can be configured with set command.
4.4.2 ModBus IP
4.5
RS485
By default Line L3 is used as an RS485 Interface line for DTE connection. CoolMasterNet supports the following
RS485 based protocols:
· ModBus RTU (Slave mode)
4.5.1 ModBus RTU
CoolMasterNet can be used as a ModBus RTU slave device working in accordance with Modbus-IDA.ORG
"MODBUS over serial line specification and implementation guide". RS485 default frame format is
Baud Rate
9600
Data Bits
8
Parity Control
None
Stop Bits
1
Flow Control
None
4.5.2 CoolGate 4
CoolGate 4 is based on ModBus RTU protocol. Its address map is similar to CoolGate device, previously
manufactured by CoolAutomation (see CoolGate PRM for more information). CoolGate 4 protocol can be used
for backward compatibility.