
32
Information in the following table applies to the SP10, SP16, and SP20.
Word
Bit
Function
03
0300
PC #0
Turns ON when a PC link error occurs.
0301
PC #1
0302
PC #2
0303
PC #3
0304
PC #0
Turns ON when PC link is normal or in RUN mode.
0305
PC #1
0306
PC #2
0307
PC #3
0308
1.0-second Clock Pulse
0309
0.1-second Clock Pulse
0310
0.01-second Clock Pulse
0311
Error (ER) Flag
0312
Carry (CY) Flag
0313
Less Than (LE) Flag
0314
Equals (EQ) Flag
0315
Greater Than (GR) Flag
04
0400 to 0407
Cannot be used
0408
Always ON Flag
0409
Always OFF Flag
0410
First Scan Flag
0411
Step Flag
0412 to 0415
Cannot be used
Information in the following table applies to the SP16 and SP20 only.
Word
Bit
Function
05
0500 to 0514
Cannot be used
0515
DR Data Transfer Enable Bit
06
0600 to 0615
Cannot be used
07
0700 to 0707
Maximum Scan Time Area
0708 to 0715
Current Scan Time Area
08
0800 to 0815
ATM1 Set Value Area
09
0900 to 0915
ATM2 Set Value Area
Descriptions: SP10, SP16, and SP20
Error Flag
Bit 0311 turns ON when data for an arithmetic operation or indirectly ad-
dressed data is not in BCD. It also turns ON when a specified operand ex-
ceeds the data area, e.g., when an operand requires two words and the last
word in a data area is designated.
Arithmetic Flags
The following flags are used in arithmetic calculation , and comparison in-
structions. These flags are all reset when END is executed, and therefore
cannot be monitored from a programming device.
Memory Areas
Section 3-2