
Mounting and Wiring
Remote Access
Remote Access
Overview
Remote controller access via
Modem requirements
Most commercially available modems can be used with the UMC800 controller. The modem must have the following capabilities:
•RS232 interface
•Auto answer
•Can operate at 9600 baud, 8 data bits, 1 stop bit, and no parity
•Hardware handshaking can be disabled
•Software handshaking can be disabled
•Data Terminal Ready (DTR) input can be disabled
•Result codes can be suppressed
•Echo can be disabled
•Must be equipped with
•Must be able to load the NVRAM settings automatically on
Cable requirements
You will need an interface cable to connect the modem to the
TIP
The Null Modem cable used to directly connect a PC running Control Builder Software to the controller may typically not be used to connect the PC to the modem or to connect the modem to the controller.
If your modem requires command string configuration, you will need an interface cable to connect the modem to your PC. Refer to your modem and computer documentation to determine this cable’s requirements.
44 | UMC800 Controller Installation and User Guide | Release F |
|
| 4/01 |