531
Memory Areas
Appendix C
SR 252
00
High-speed Counter 0 Reset Bit
35
01
Control Bit for Inner Board in Slot 2
Pulse I/O Board: High-speed Counter 1 Reset Bit
Turn ON to reset PV of high-speed counter 1 (port 1).
Absolute Encoder Interface Board:
Absolute High-speed Counter 1 Origin Compensation Bit
Turn ON to set origin compensation for absolute high-speed counter 1 (port 1). Automat-
ically turns OFF when compensation value is set in DM 6611.
147
02
Control Bit for Inner Board in Slot 2
Pulse I/O Board: High-speed Counter 2 Reset Bit
Turn ON to reset PV of high-speed counter 2 (port 2).
Absolute Encoder Interface Board:
Absolute High-speed Counter 2 Origin Compensation Bit
Turn ON to set origin compensation for absolute high-speed counter 2 (port 2). Automat-
ically turns OFF when compensation value is set in DM 6612.
147
03 to 07
Not used.
08
Peripheral Port Reset Bit
Turn ON to reset peripheral port. (Not valid when Programming Device is connected.)
Automatically turns OFF when reset is complete.
52
09
RS-232C Port Reset Bit
Turn ON to reset RS-232C port. Automatically turns OFF when reset is complete.
10
PC Setup Reset Bit
Turn ON to initialize PC Setup (DM 6600 through DM 6655). Automatically turns OFF
again when reset is complete. Only effective if the PC is in PROGRAM mode.
2
11
Forced Status Hold Bit
OFF: Bits that are forced set/reset are cleared when switching from PROGRAM mode to
MONITOR mode.
ON: The status of bits that are forced set/reset are maintained when switching from
PROGRAM mode to MONITOR mode.
13
12
I/O Hold Bit
OFF: IR and LR bits are reset when starting or stopping operation.
ON: IR and LR bit status is maintained when starting or stopping operation.
13
13
Not used.
14
Error Log Reset Bit
Turn ON to clear error log. Automatically turns OFF again when operation is complete.
505
15
Output OFF Bit
OFF: Normal output status.
ON: All outputs turned OFF.
163
SR 253
00 to 07
FAL Error Code
The error code (a 2-digit number) is stored here when an error occurs. The FAL number
is stored here when FAL(06) or FALS(07) is executed. This byte is reset (to 00) by exe-
cuting a FAL 00 instruction or by clearing the error from a Programming Device.
230
08
Low Battery Flag
Turns ON when a CPU Unit battery voltage drops.
502
09
Cycle Time Over Flag
Turns ON when a cycle time overrun occurs (i.e., when cycle time exceeds 100 ms).
502
10 to 12
Not used.
13
Always ON Flag
---
14
Always OFF Flag
---
15
First Cycle Flag
Turns ON for 1 cycle at the start of operation.
---
Word
Bit(s)
Function
Page