Document Part # 026-4280 Rev 1 Page 4 of 33
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5.3. Keyboard Display CX660 or CH660
5.4. LAN Connection - Maximum of 8 Connections
To create a LAN connection and to a perform synchronized defrost (also called master-slave functioning):
1. Connect a shielded cable between terminals 38 [-] and 39 [+] for a maximum of eight (8) sections.
2. The Adr parameter is the number that identifies each electronic board. Address duplication is not permitted; in this case,
synchronized defrost and the communication with the monitoring system are not guaranteed (the Adr is also the
MODBUS address). See Figure 5-3 for an example of a properly configured LAN connection:
5.5. How to Connect the Monitoring System
Figure 5-2 - Keyboard Display
Figure 5-3 - LAN Connection
NOTE: If the LAN is connected properly, the green LED will be ON. If the LAN is not connected properly, a blinking LED will display.
The maximum allowed distance is 30m.
Figure 5-4 - Connecting the Monitoring System
The XM670/679K Board can operate also without
keyboard.
Polarity:
Terminal [34] [-]
Terminal [35] [+]
Use twister shielded cable AWG 18 or less in cases where
longer distance is required.
Max distance: 30 meters
1. Connect through terminals 36 [-] and 37 [+].
2. Use a shielded twisted cable (for example, Belden 8762 or CAT 5 cable).
3. The maximum allowable distance is 1 kilometer.
4. Do not connect the shield wire to the earth or ground terminals of the
device. Use insulation tapes to avoid accidental contacts.
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