System information

Crestron 2-Series Control Systems Reference Guide

Reference Guide – DOC. 6256A 2-Series Control Systems • 13

Troubleshooting Communications

Use the following checklist if communication cannot be established with the control

system.

1. If possible remove any cards that are in the card cage, Cresnet devices and

the Ethernet card (if applicable).

2. Verify that you are using the correct cables. As described previously, most

RS-232 connections between a control system and a PC require a straight-

through serial cable. That is, pin 1 on one end is connected to pin 1 on the

other end. Pin 2 connects to pin 2, etc. With a TCP/IP connection, a CAT5

cable with 8-pin RJ-45 connectors and the wiring shown on page 11 must

be used.

NOTE: If you are using a serial adapter, Crestron Toolbox should be used

to establish PC-to-control system communications.

3. If using a serial connection, verify that the correct COM port on the PC has

been selected. Some computers have more than one COM port; some may

be internal (e.g., for a modem). Consult the manufacturer’s documentation

for further information about the COM ports on your PC.

4. Check the MSG / ERR LED indicator on the front panel of the control

system. If this LED is illuminated before a program is loaded, unplug the

unit and reapply power after a few seconds. If the LED illuminates again,

call Crestron customer service.

5. With a serial connection, reset the control system as follows:

a. Open Crestron Toolbox and open a text console connection to the

control system by clicking

and selecting the entry for the control

system’s serial connection from the dropdown list on the bottom of the

page.

NOTE: The address book entry for the serial connection should

specify a 115200 baud rate. Do not select “Auto-Detect”.

b. Set the baud rate of the control system to 115200, as follows:

- Press and release the HW-R button on the unit’s front panel.

- Immediately press and hold the SW-R button for approximately

ten seconds. The Crestron Toolbox text console should display the

following message: