Honeywell Cloud Link 4G Modem User Manual page 25

Note: While switching between RS232 or RS485, you must change firmware configuration using the
appropriate item code. The RS485 cable supports a baud rate range from 9600 to 57600 bps. Max-
imum baud rate for RS232 interface is 115200 bps.
Warning: Older RS232 standards have a voltage level of +/- 18V. Using this voltage level can damage
the Cloud Link 4G Modem device.
Note: RUID must be configured before using BLE communication. Configuration must be done using
serial commincation.
To keep power consumption low when not in communication, both transmitters (Tx & RTS) are to be
turned off and RS485 will be in Receiving Mode in Cloud Link 4G Modem. To reduce power consumption,
it is recommended to do same in the EVC or any other device where Cloud Link 4G Modem is interfaced.
Cloud Link 4G Modem Controller can wake-up from deep sleep via Rx Line or CTS line of RS232 Interface
(or) Rx line of RS485 interface.
MPN: 0395011005
MFR: Molex
Description: 5-Pin Terminal Block Header
MPN: 0395000005
MFR: Molex
Description: 5-Pin Terminal Block Plug
Cable for RS232:
Cloud Link 4G Modem supports up to 30m (100ft) long cable for RS232 interface with shielded cable.
Shield of RS232 cable must be terminated to Earth at one point to make interface immune to EMI/EMC.
Recommended RS232 Cable:
MPN: 9941 060100
MFR: Belden
Description: 5-Conductor Low Capacitance Shielded Cable of Length 30m (100ft).
Honeywell
2016
4 Electrical Assembly
4.2 Serial Communication – RS232/485
25