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Publication 1747-RM001G-EN-P - November 2008

6-8 Program Flow Instructions

Suspend (SUS)

When this instruction is executed, it causes the processor to enter the Suspend

Idle mode and stores the Suspend ID in word 7 (S:7) of the status file. All

outputs are de-energized.

Use this instruction to trap and identify specific conditions for program

debugging and system troubleshooting.

Entering Parameters

Enter a suspend ID number from -32,768 to + 32,767 when you program the

instruction.

When the SUS instruction is executed, the programmed suspend ID, S:7 (word

7), as well as the program file ID, S:8 (word 8), from which the SUS instruction

executed is placed in the system status file.

Immediate Input with Mask

(IIM)

This instruction allows you to update data prior to the normal input scan.

When the IIM instruction is enabled, the program scan is interrupted. Data

from a specified I/O slot is transferred through a mask to the input data file,

making the data available to instructions following the IIM instruction in the

ladder program.

Entering Parameters

Slot - Specify the input slot number and the word number pertaining to the

slot. Word 0 of a slot need not be specified. Fixed and SLC 5/01 processors

can have up to 8 words associated with the slot. The SLC 5/02 and higher

processors can have up to 32 words associated with the slot (0 to 31).

For 16 I/O controllers, O:0/0 to 5 are valid and O:0/6 to 15 are considered

unused outputs. (They do not physically exist). For 32 I/O controllers, O:0/0

to 11 are valid and O:0/12 to 15 are considered unused outputs.

Example

Mask - Specify a hexadecimal constant or register address.

For the mask, a 1 in an input’s bit position passes data from the source

(physical input) to the destination (input image table). A 0 inhibits data from

passing from the source to the destination.

SUS

Suspend

Suspend ID 0

SUS

Output Instruction

Fixed SLC

5/01

SLC

5/02

SLC

5/03

SLC

5/04

SLC

5/05

• •••••

IIM

Immediate Input w/Mask

Slot I:1.0

Mask 0FF00h

Length 1

IIM

Input Instruction