Allen-Bradley MicroLogix 1400 User Manual

Publication 1766-RM001A-EN-P - October 2008
Conversion Instructions 251
If the destination is the math register, it must be directly addressed as S:13.
S:13 is the only status file element that can be used.
Updates to Math Status Bits
Changes to the Math Register
Contains the 5-digit BCD result of the conversion. This result is valid at
overflow.
Example
The integer value 9760 stored at N7:3 is converted to BCD and the BCD
equivalent is stored in N7:0. The maximum BCD value is 9999.
Math Status Bits
With this Bit: The Controller:
S:0/0 Carry always resets
S:0/1 Overflow sets if BCD result is larger than 9999. On overflow, the minor
error flag is also set.
S:0/2 Zero Bit sets if result is zero, otherwise resets
S:0/3 Sign Bit sets if the source word is negative; otherwise resets
TIP
To convert numbers larger than 9999 decimal, the destination must be the
Math Register (S:13). You must reset the Minor Error Bit (S:5/0) to prevent
an error.
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Allen-Bradley MicroLogix 1400 Specifications

General

Processor	32-bit
Expansion Modules	Up to 7 expansion I/O modules
Power Supply	24V DC or 120/240V AC
Programming Software	RSLogix 500
Communication Ports	Ethernet, RS-232/RS-485 combo port
Controller Type	Programmable Logic Controller (PLC)
Series	MicroLogix
Digital Outputs	12
Analog Inputs	6 (embedded)
Analog Outputs	2 (embedded)
High-Speed Counter	6 high-speed counters
Pulse Output	2 (embedded)
Ethernet Port	Yes