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Word(s) DefaultFunctionBit(s)
DM 6556 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 6557 00 to 15 Transmission delay
0000 to 9999: BCD in 10-ms units.
0 ms
DM 6558 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 6559 00 to 07 Start code (RS-232C)
00 to FF (binary)
0000
08 to 15 12 to 15 of DM 6558 set to 0:
Number of bytes received
00: Default setting (256 bytes)
01 to FF: 1 to 255 bytes
12 to 15 of DM 6558 set to 1:
End code (RS-232C)
00 to FF (binary)
3-6-6 Special I/O Unit Area Settings
The setting in bits 08 through 15 of DM 6602 determines the size and location of
the Special I/O Unit Area, as shown in the following table.
Setting Mode Function
00 C200H-compatible
RAM Mode
DM 1000 through DM 2599 are used for the Special I/O Unit Area.
• Data in the Special I/O Unit Area can be read/written.
• The data cannot be converted to ROM.
01 C200H-compatible
ROM Mode 1
The contents of DM 7000 through DM 7999 are transferred to DM 1000 through DM 1999
at startup and DM 1000 through DM 1999 are used for the Special I/O Unit Area.
• The UM Area Allocation operation must be performed beforehand.
• The data is compatible with C200H applications that use EEPROM/EPROM.
• ROM conversion is possible indirectly by converting DM 7000 through DM 7999 to ROM.
02 DM Linear Mode 1 DM 7000 through DM 7999 are used for the Special I/O Unit Area.
• The UM Area Allocation operation must be performed beforehand.
• DM 1000 through DM 1999 can be used as regular DM.
• DM 7000 through DM 7999 can be converted to ROM.
DM (Data Memory) Area Section 3-6