INSTALLATION MANUAL User Manual

Chapter 2
Introduction to the DL50
2–5
➅ Configuration DIP Switches
Use these DIP switches to select:
• Slave Address
• Protocol (Simplex or Duplex)
• Duplex Checksum (On or Off)
• Character Height
• Default Color (TriĆcolor displays)
• Baud Rate
• Mode Select
• Hardware Type
Chapter 3 provides a complete description of these switches.
➆ RS-232 Port Connections
The RS-232 communications port allows point-to-point communications
between the DL50 and a host at distances of up to 50 feet (15.2 meters).
The following terminal connections are provided
:
Terminal Number* Label Definition
1 T Transmit Line
2 R Receive Line
3 G Signal Ground
* Terminal #1 is top terminal.
➇ RS-485 Port Connections
The RS-485 communications port allows multi-drop communications. The
cable distance between the last DL50 and host device (master) may be up to
4,000 feet (1219 meters). The following terminal connections are provided:
Label Function Definition
1 E. GND Earth Ground
2 Shield Shield
3 COM Common
4 + RS-485 + (B)
5 - RS-485 - (A)
6 TERM Termination
➈ Conduit Openings
External power and communications lines enter the enclosure through
these openings.