Manual
Configuring the Communications
Controller
Chapter 3
3-7
Table 3.B
Main
Menu: Basic Communication Parameters
Parameter
Number
Parameter Description Factory Default
RIO Parameters
Rack Address Defines the address of the rack containing the Communications Controller.
Valid choices are Programmable Logic Controller dependent; maximum is 77
(octal).
01
Starting Module Group Defines the address of the Communications Controller within the rack.
Valid choices are 00, 02, 04, 06
00
Last Module Is this the last module in the current rack? No (00), Yes (01)
To save time in RIO communications, and to make sure all modules in a rack are
read, be sure only the last logical module in each rack is configured as Yes.
No (00)
Baud Rate Sets the baud rate (the speed in bits/second at which data is transferred) of the
link between the Communications Controller and Remote I/O scanner.
Possible rates are 57.6 (57), 115.2 (11), 230.4 (23) Kbits/s
57.6 (57)
RS232C Parameters
RS232C Baud Rate Sets the baud rate of the link between the Communications Controller and the
RS232C port of the host computer. The host computer and the Communications
Controller must be set to the same baud rate. Possible rates are 300 (03), 600
(06), 1200 (12), 2400 (24), 4800 (48), 9600 (96), 19200 (19) Bits/s
9600 (96)
RS232C Parity Parity of the characters on the RS232C link. The host computer and the
Communications Controller must have the same parity setting.
Parity can be None (00), Even (01), or Odd (02).
None (00)
DF1 Protocol Sets the DF1 protocol as being either: Fullduplex (00) or Halfduplex (01). Full Duplex (00)
Error Detection Two forms of error checking are available on the RS232C link: BCC Block Check
Code (00) or CRC16 Cyclic Redundancy Check (01).
The application program running on the host computer must use the same error
detection as the Communications Controller. Refer to your application's
documentation to determine what error detection it is using, and set the
Communications Controller to the same setting.
BCC (00).
Station Address The station address of this Communications Controller on the RS232C link.
Valid addresses are 00-77 (octal) inclusive.
00
Other Parameters
Submenu Parameters Lets you into the submenu when the DATA key is pressed, to set the advanced
communication parameters; the data display will show two dashes.
See the section below on Advanced communication parameters for more
information.
N/A
Series and Revision Displays the series and revision level of the Communications Controller. The first
digit shows the series (A-J), the second the revision (A-J). For example, Series A
Revision B is displayed as AB.
You cannot set this value.
N/A