Allen-Bradley MicroLogix 1000 User Manual

Preface
MicroLogix 1000 Programmable Controllers User Manual
9–14
Overflow Trap Bit, S:5/0
Minor error bit (S:5/0) is set upon detection of a mathematical overflow or division
by zero. If this bit is set upon execution of an END statement, or a TND instruction,
a major error occurs.
In applications where a math overflow or divide by zero occurs, you can avoid a
controller fault by using an unlatch (OTU) instruction with address S:5/0 in your
program. The rung must be between the overflow point and the END or TND
statement.
Changes to the Math Register, S:13 and S:14
Move and logical instructions do not affect the math register.
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Allen-Bradley MicroLogix 1000 Specifications

General

Communication Ports	RS-232
Power Supply	24V DC or 120/240V AC
Programming Software	RSLogix 500
Manufacturer	Allen-Bradley
Category	Controller
Series	MicroLogix
Programming Language	Ladder Logic
Input Voltage	24V DC or 120/240V AC
I/O Points	10 to 32 points
Processor Type	8-bit
Operating Temperature	0…55 °C (32…131 °F)
Processor	8-bit