1-1
Section
PC Setup
11
Word(s)
Page
Function
Bit(s)
Peripheral Port Communications Settings
The following settings are effective after transfer to the PC.
If the CPM2A CPU Unit’s Communications Switch is ON, communications through the peripheral port are governed by
the default settings (all 0) regardless of the settings in DM 6650 through DM 6654.
The CPM2A’s Communications Switch setting has no effect on communications with a Programming Console connected
to the peripheral port or Support Software set for peripheral bus communications. The CPM2A CPU Unit will auto-detect
either Programming Device and automatically establish communications.
SW2 on the CPM2C CPU Unit must be OFF in order for communications through the CPM2C’s peripheral port to be gov-
erned by the settings in DM 6650 through DM 6654.
DM 6650
00 to 03
Port settings
00: Standard (1 start bit, 7 data bits, even parity, 2 stop bits, 9,600 bps), Host Link unit
number: 0
01: Settings in DM 6651
(Any other setting specifies standard settings, causes a non-fatal error, and turns ON
AR 1302.)
226
04 to 11
Not used.
12 to 15
Communications mode
0: Host Link or peripheral bus; 1: No-protocol
(Any other setting specifies Host Link, causes a non-fatal error, and turns ON
AR 1302.)
DM 6651
00 to 07
Baud rate
00: 1,200 bps; 01: 2,400 bps; 02: 4,800 bps; 03: 9,600 bps; 04: 19,200 bps
08 to 15
Frame format
Start bits
Data bits
Stop bits
Parity
00:
1 bit
7 bits
1 bit
Even
01:
1 bit
7 bits
1 bit
Odd
02:
1 bit
7 bits
1 bit
None
03:
1 bit
7 bits
2 bits
Even
04:
1 bit
7 bits
2 bits
Odd
05:
1 bit
7 bits
2 bits
None
06:
1 bit
8 bits
1 bit
Even
07:
1 bit
8 bits
1 bit
Odd
08:
1 bit
8 bits
1 bit
None
09:
1 bit
8 bits
2 bits
Even
10:
1 bit
8 bits
2 bits
Odd
11:
1 bit
8 bits
2 bits
None
(Any other setting specifies standard settings (1 start bit, 7 data bits; even parity, 2 stop
bits, 9,600 bps), causes a non-fatal error, and turns ON AR 1302.)
DM 6652
00 to 15
Transmission delay (0000 to 9999 BCD sets a delay of 0 to 99,990 ms.)
(Any other setting specifies a delay of 0 ms, causes a non-fatal error, and turns ON
AR 1302.)
226
DM 6653
00 to 07
Node number (Host Link)
00 to 31 (BCD)
(Any other setting specifies a node number of 00, causes a non-fatal error, and turns
ON AR 1302.)
08 to 11
Start code selection for no-protocol communications
0: Disables start code; 1: Enables start code in DM 6649
(Any other setting disables the start code, causes a non-fatal error, and turns ON
AR 1302.)
12 to 15
End code selection for no-protocol communications
0: Disables end code; 1: Enables end code in DM 6649; 2: Sets end code of CR, LF.
(Any other setting disables the end code, causes a non-fatal error, and turns ON
AR 1302.)