Publication 2711-UM014B-EN-P
Configuring the Terminal 3-13
DF1 Communications
The DF1 screen lets you display or modify DF1/full duplex
communication settings for a DF1 PanelView terminal.
Communication Parameters
Sets the communication parameters for the DF1 port on the PanelView
terminal. The settings must match the target device. Each key press
toggles through the available combinations for:
• Parity = None (default), Even or Odd
• Data Bits = 8
• Stop Bits = 1 (default) or 2
The DF1 port on the PLC-5 controllers allows a parity of Even or None
parity with 8 Data Bits. For the SLC controllers, the parity is fixed at
None and uses CRC error detection.
Baud Rate
Steps through the baud rates for the DF1 communications port with
each key press: 1200, 2400, 4800, 9600, 19200. The initial default is
9600.The baud rate must match the baud rate of the target device.
Error Detection
Specifies the type of error checking performed on data. The default is
CRC (Cyclic Redundancy Check).
• BCC (Block Check Character) - modulo-256 arithmetic sum of an
array of data bytes used for medium-level data verification.
• CRC (Cyclic Redundancy Code) - calculated on an array of data
bytes and used for high-level data verification.
IMPORTANT
Settings downloaded with a DF1 application have
priority over terminal settings and take effect
immediately after the download.
DF1 - Full Duplex
Handshaking
Communication
Parameters Baud Rate
No Parity
8 Data Bits
1 Stop Bit
9600
OFF
F1
F2
F16
EXIT
Error
CRC
F3
Detection
Node
64
F4
F5
Comm
Fault
LED
LED
Connected
DF1 - Full Duplex
N/8/1
F1 Comms
F4 EXIT
F3 MORE
9600
F2 Baud
Typical DF1 Setup Screens
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