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4-3
Section
CPM2A/CPM2C Communications Functions
256
Word
Setting
Function
Bit
DM 6646
00 to 07
Baud rate
00: 1,200 bps; 01: 2,400 bps; 02: 4,800 bps; 3: 9,600 bps; 04: 19,200 bps
As required
08 to 15
Frame format
Start
Length Stop Parity
00:
1
7
1
Even
01:
1
7
1
Odd
02:
1
7
1
None
03:
1
7
2
Even
04:
1
7
2
Odd
05:
1
7
2
None
06:
1
8
1
Even
07:
1
8
1
Odd
08:
1
8
1
None
09:
1
8
2
Even
10:
1
8
2
Odd
11:
1
8
2
None
(Other settings will cause a non-fatal error, the default settings (03) will be used,
and AR 1302 will turn ON.)
DM 6647
00 to 15
Transmission delay (Host Link)
0000 to 9999 (BCD): Set in units of 10 ms, e.g., setting of 0001 equals 10 ms
(Other settings will cause a non-fatal error, the default setting (0000) will be used,
and AR 1302 will turn ON.)
0000 to
9999
DM 6648
00 to 07
00 to 31 (BCD): Node number (Host Link)
(Other settings will cause a non-fatal error, the default setting (00) will be used, and
AR 1302 will turn ON.)
As required
08 to 11
Start code enable (RS-232C)
0: Disable; 1: Use start code in DM 6649.
0 or 1
12 to 15
End code enable (RS-232C)
0: Disable (number of bytes received)
1: Use end code in DM 6649.
2: CR, LF
(Other settings will cause a non-fatal error, the default setting (0) will be used, and
AR 1302 will turn ON.)
0 to 2
DM 6649
00 to 07
Start code (00 to FF)
(No-protocol, effective when bits 8 to 11 of DM 6648 are set to 1.)
00 to FF
08 to 15
No. of bytes of data received
(No-protocol, effective when bits 12 to 15 of DM 6648 are set to 0.)
00: 256 bytes
01 to FF: 1 to 255 bytes
00 to FF
End code (00 to FF)
(No-protocol, effective when bits 12 to 15 of DM 6648 are set to 1.)
00 to FF
Note
If SW1 on the front panel of the CPU Unit is ON, the RS-232C port will operate
with the default settings regardless of the settings in DM 6645 to DM 6649.
Settings for Peripheral Port
Word
Bit
Function
Setting
DM 6650
00 to 03
Port settings
0: Standard (1 start bit, 7-bit data, 2 stop bits, even parity, 9,600 bps; Host Link
unit number: 0)
1: Settings in DM 6651
(Other settings will cause a non-fatal error, the default setting (0) will be used, and
AR 1302 will turn ON.)
As required
04 to 11
Not used
0
12 to 15
Communications mode
0: Host Link or peripheral bus; 1: No-protocol
(Other settings will cause a non-fatal error, the Host Link setting will be used, and
AR 1302 will turn ON.)
1