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Word(s) FunctionBit(s)
270
00 Save UM to Cassette Bit
Data transferred when the Bit is turned ON in
PROGRAM mode. Bit will automatically turn OFF.
01 Load UM from Cassette Bit
PROGRAM mode. Bit will automatically turn OFF.
A non-fatal error will occur if these bits are turned
ON in RUN or MONITOR modes.
02 Compare UM to Cassette Bit
03 Comparison Results
0: Contents identical; 1: Contents differ or comparison not possible
04 to 10 Reserved by system (not accessible by user)
11 Transfer Error Flag: Transferring
SYSMAC NET data link table on UM
during active data link.
Data will not be transferred from UM to the Memory
Cassette if an error occurs (except for Board
Checksum Error). Detailed information on checksum
12 Transfer Error Flag: Not PROGRAM
mode
errors occurring in the Memory Cassette will not be
output to SR 272 because the information is not
13 Transfer Error Flag: Read Only
needed. Repeat the transmission if SR 27015 is ON.
14 Transfer Error Flag: Insufficient
Capacity or No UM
15 Transfer Error Flag: Board Checksum
Error
271
00 to 07 Ladder program size stored in Memory Cassette
Ladder-only File: 04: 4 KW; 08: 8 KW; 12: 12 KW; ... (32: 32 KW)
00: No ladder program or a file other than a ladder program has been stored.
08 to 15 Ladder program size and type in CPU Unit (Specifications are the same as for bits 00 to 07.)
272
00 to 10 Reserved by system (not accessible by user)
11 Memory Error Flag: PC Setup Checksum Error
12 Memory Error Flag: Ladder Checksum Error
13 Memory Error Flag: Instruction Change Vector Area Checksum Error
14 Memory Error Flag: Memory Cassette Online Disconnection
15 Memory Error Flag: Autoboot Error
273
00 Save IOM to Cassette Bit
Data transferred to Memory Cassette when Bit is
turned ON in PROGRAM mode. Bit will automatically
01 Load IOM from Cassette Bit
turned ON in PROGRAM mode. Bit will automatically
turn OFF. An error will be produced if turned ON in
any other mode.
02 Set this bit to 0.
03 to 07 Reserved by system (not accessible by user)
08 to 11 Contains the EM bank number when the Memory Cassette contains IOM data.
12 Transfer Error Flag: Not PROGRAM
mode
Data will not be transferred from IOM to the Memory
Cassette if an error occurs (except for Read Only
13 Transfer Error Flag: Read Only
Error).
14 Transfer Error Flag: Insufficient
Capacity or No IOM
15 Always 0.
SR (Special Relay) Area Section 3-4