User manual

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Special registers SR017 to SR511 (W2577 to W3071)
May be changed - each is composed of 1 word.
* Applied when using wire link modules
Address Function Description
SR017
System error
information
Gives result of self-diagnosis by CPU. Indicates error content .
Watchdog time error = ON
Undefined instruction = ON
Peripheral device fault = ON
Misc. logic faults = ON
Logic circuit fault = ON
Microcomputer fault = ON
SR018
Location of
undefined
instruction
Indicates the location of the instruction (the step number) that caused an
undefined instruction error during program execution.
SR019 Reserved System use area
SR020 Multiplication Stores high order bit values upon executing 16 bit multiplication instructions.
SR021 Lower remainder
Stores the low order bit values of remainder after a division instruction has
been executed.
SR022
Higher
remainder
Stores the high order bit values of the remainder after a division instruction
has been executed.
SR023 to
SR027
Reserved System use area
SR028 to
SR029
Defective slot
information
Location of defective slots mounted onto the basic slot
SR030 to
SR48
Reserved System use area (syntax information and system information)
SR49 to SR79 Slot information Stores slot information for installed I/O modules.
SR261 to
SR279 *
Remote control
domain
Contains remote I/O configuration data.
SR289 to
SR297
RTC
Contains real time clock information
(year, month, day, hour, minute, second, date).
SR298 to
SR373 *
User-defined
communication
area
For port COM2
User-defined communication area
SR374 to
SR379 *
Link error
information
Link error information data.
SR380 to
SR511
Reserved System use area
MSB
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