Omron SYSMAC CS Series Operation Manual page 117

SR Area
Address Bits
SR 250 00 to 07 (Reserved by system.)
08 to 11 Peripheral port error code
12 Peripheral Port Communications Error
Turns ON when there is a peripheral port communications error.
13 to 15 (Reserved by system.)
SR 251 00 to 15 (Reserved by system.)
SR 252 00 DM Area to Flash Memory Transfer Bit
Turn ON this bit to save the contents of DM Area words DM 0000 to DM 6143 to
flash memory. The bit automatically turns OFF after execution.
01 to 06 (Reserved by system.)
07 CONSTANT CYCLE TIME OVER clear
0 to 1: CONSTANT CYCLE TIME OVER clear
08 Peripheral Port Reset Bit
Turn ON this bit to reset the peripheral port. (Invalid if the peripheral port is used for
peripheral bus communications.) The bit automatically turns OFF after execution.
09 Library name read
Valid only in Program mode.
0: Ladder library name is not stored in SR 220 to 223.
1: Ladder library name is stored in SR 220 to 223.
10 Unit Setup Area Reset Bit
Turn this bit ON to reset the Unit Setup Area (DM 6600 to
DM 6655). The bit automatically turns OFF after execution.
11 to 13 (Reserved by system.)
14 Error Log Reset Bit
Turn this bit ON to clear the error log. The bit automatically
turns OFF after execution.
15 Ladder library set flag
Valid only in program mode
0 to 1: Create library
Note: This is automatically turned to 0 (OFF) after completion
of creating the library.
SR 253 00 to 12 (Reserved by system.)
13 Always ON Flag
14 Always OFF Flag
15 First Cycle Flag
SR 254 00 1-minute Clock Pulse (30 seconds ON; 30 seconds OFF)
01 0.02-second Clock Pulse (0.01 seconds ON; 0.01 seconds OFF)
02 Negative (N) Flag
03 (Reserved by system.)
04 Overflow (OF) Flag
05 Underflow (UF) Flag
06 Differential Monitor Completion Flag
Turns ON when differential monitoring has been completed.
07 STEP Execution Flag
Turns ON for one cycle only at the start of a processed based on STEP.
08 to 15 (Reserved by system.)
Function
0 Hex: No error
1 Hex: Parity error
2 Hex: Framing error
3 Hex: Overrun error
Note: When a Programming Device is connected
using peripheral bus communications, F Hex is
stored here.
Section 6-3
Controlled
by
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Unit
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User
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User
User
The settings of
these bits are valid
only when the Cus-
tomizable Counter
Unit is in PRO-
GRAM mode.
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Unit
---
Unit
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