3
PC Setup
Section 1-1
Errors in the PC Setup
If an incorrect PC Setup setting is accessed, a non-fatal error (error code 9B)
will be generated, the corresponding error flag will be turned ON, and the
default setting will be used.
1-1-2
Serial Communications Board Settings
The following table shows the Serial Communications Board settings in the
DM area. For details, refer to the
Serial Communications Board Operation
Manual.
Flag(s)
Function
AR 2400
Turns ON when there is an error in DM 6600 to DM 6614 (read when the power is turned ON).
AR 2401
Turns ON when there is an error in DM 6615 to DM 6644 (read at the beginning of operation).
AR 2402
Turns ON when there is an error in DM 6645 to DM 6655 (read regularly when power is ON).
AR 0400 to AR 0407
An error code of 10 is written to this byte when there is an error in DM 6550 to DM 6559 (read reg-
ularly when power is ON).
Word(s)
Bit(s)
Function
Serial Communications Board Settings
The following settings are effective after transfer to the PC. (The settings for port 2 are contained in words DM 6550 to
DM 6554 and the settings for port 1 are contained in words DM 6555 to DM 6559.)
DM 6550
(port 2)
DM 6555
(port 1)
00 to 03
Port Settings
0: Standard (1 start bit, 7-bit data, even parity, 2 stop bits, 9,600 bps)
1: Settings in DM 6551 (DM 6556 for port 1)
04 to 07
CTS Control Settings
0: Disable; 1: Set
08 to 11
Link Words for 1:1 Data Link
(when bits 12 to 15 are set to 3)
0: LR 00 to LR 63; 1: LR 00 to LR 31; 2: LR 00 to LR 15
Maximum Programmable Terminal unit number (when bits 12 to 15 are set to 5)
1 to 7
12 to 15
Communications Mode
0: Host Link; 1: No-protocol; 2: 1:1 Data Link Slave; 3: 1:1 Data Link Master; 4: NT Link in 1:1
Mode; 5: NT Link in 1:N Mode; 6: Protocol Macro
DM 6551
(port 2)
DM 6556
(port 1)
00 to 07
Baud Rate
00: 1.2K, 01: 2.4K, 02: 4.8K, 03: 9.6K, 04: 19.2K
08 to 15
Frame Format
Start
Length
Stop
Parity
00:
1bit
7 bits
1 bit
Even
01:
1bit
7 bits
1 bit
Odd
02:
1bit
7 bits
1 bit
None
03:
1bit
7 bits
2 bit
Even
04:
1bit
7 bits
2 bit
Odd
05: 1bit
7
bits
2
bit
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 bit
Even
10:
1 bit
8 bits
2 bit
Odd
11:
1 bit
8 bits
2 bit
None
DM 6552
(port 2)
DM 6557
(port 1)
00 to 15
Transmission Delay
(Host Link or No-protocol)
0000 to 9999 (BCD): Set in units of 10 ms, e.g., a setting of 0001 equals 10 ms