66
Word(s) DefaultFunctionBit(s)
DM 6551 00 to 07 Baud rate
00: 1.2K, 01: 2.4K, 02: 4.8K, 03: 9.6K, 04: 19.2K
1.2 K
08 to 15 Frame format
Start Length Stop 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 bit Even
04: 1 bit 7 bits 2 bit Odd
05: 1 bit 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
1 start bit, 7-bit
data, 1 stop bit,
even parity
DM 6552 00 to 15 Transmission delay
0000 to 9999: BCD in 10-ms units.
0 ms
DM 6553 00 to 07 Node number (Host Link)
00 to 31 (BCD)
0
08 to 11 Start code enable (RS-232C)
0: Disable; 1: Set
Disabled
12 to 15 End code enable (RS-232C)
0: Disable (number of bytes received)
1: Set (specified end code)
2: CR, LF
Disabled
DM 6554 00 to 07 Start code (RS-232C)
00 to FF (binary)
0000
08 to 15 12 to 15 of DM 6553 set to 0:
Number of bytes received
00: Default setting (256 bytes)
01 to FF: 1 to 255 bytes
12 to 15 of DM 6553 set to 1:
End code (RS-232C)
00 to FF (binary)
Communications Board Port A Settings (DM 6555 to DM 6559)
The following settings are read continually while the PC is ON.
DM 6555 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 6556
Standard
04 to 07 CTS control setting
0: Disable CTS control
1: Enable CTS control
Disable
08 to 11 Words linked for 1:1 PC Link (Can’t be changed once set in the 1:1 PC Link
Master.)
0: LR 00 to LR 63; 1: LR 00 to LR 31; 2: LR 00 to LR 15
Maximum PT node number for 1:N NT Link
1 to 7 BCD (1 to 3 with a C200HE-CPU-E PC)
LR 00 to LR 63
12 to 15 Communications mode
0: Host Link; 1: RS-232C; 2: 1-to-1 link slave; 3: 1-to-1 link master;
4: NT Link (1:1); 5: NT Link (1:N); 6: Protocol Macro
Host Link
DM (Data Memory) Area Section 3-6
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