3
Communication
The SIG-1 Communication Bridge has the default device ID 254. It can send and receive serial commands
via RS-485 at 57600 Baud, 8-N-1, and Half-Duplex; and via RS-232 at 115200 Baud, 8-N-1, and Full-Duplex.
Either port may be set for Null or Straight using the switch located between the RS-232 port and the RS-485 bus.
Both configuration ports utilize a modular RJ-45 jack with the following pinouts:
RS-485 Pinout:
RS-232 Pinout:
Pin # Function
Pin # Function
Pin # Function
Pin # Function
P1
Orange White - Ground
P5
Blue White - Switched
Power Bus (12V Dev Only)
P1
Orange White -
Ground
P5
+12V DC Power
P2
Orange - Ground
P6
Green - Data B Negative
P2
Orange - Ground P6
Green - RX or TX
P3
Green White - Data A
Positive
P7
Brown White - Ground
P3
Green White -
TX or RX
P7
Brown White -
Ground
P4
Blue - Switched Power Bus
(12V Devices Only)
P8
Brown - Ground
P4
+12V DC Power
P8
Brown - Ground
Quick Start Instructions
• Connect the SIG-1 device to RS-232 and/or RS-485 devices. C12V power out to any devices
that are not connected to, or able to be powered by, the RS-485 bus.
• Connect the SIG-1 device to a known-working network port, then power on the device. The SIG-1 will power
up other devices after a few seconds.
• Communicate with the SIG-1 Device, as well as interact with other devices.
• From the Telnet connection, send a log query command to the SIG-1 to have it respond with the next available
log entry. Repeat until the log is empty.
Troubleshooting
No RS-232 communication:
• Ensure connections are fully seated.
• Ensure devices are using the correct protocol settings.
• Ensure the Null/Straight selector is set correctly.
No Ethernet Connectivity Lights
• Ensure connections are fully seated.
• Ensure the End Device is powered on with Ethernet Enabled.
• Power cycle all devices to clear out previous TCP connections.
LED periodically blinks fast (No TCP Socket connection)
• Ensure connections are fully seated.
• Ensure both the SIG-0 and End Devices have been configured correctly.
• Power cycle all devices to clear out previous TCP connections.*
*
Some devices have a limitation on the number of connected TCP clients, and may require a delay period or reboot to clear.