PLC 5 Address Format

PLC-5 devices support the following address formats:

File Type

Address Format

N, F, B

<FILE><FILE NUMBER>:<ELEMENT>

 

The use of leading zeros when specifying the <FILE NUMBER> and the <ELEMENT> is not supported.

I, O, S

<FILE>:<ELEMENT >

 

Where <FILE> is:

I

for inputs.

 

 

O

for output.

 

 

S

for status.

T, C

<FILE><FILE NUMBER>:<ELEMENT>.<TYPE>

 

Where <FILE> is:

T

for timers.

 

 

C

or counters.

 

and <TYPE> is:

ACC

Accumulator

 

 

PRE

Preset

 

 

CTL

Control Word

 

 

Note: Accumulators, Presets, and Control Words are 16 bits.

 

Bit offsets for the Control Word (CTL) in Counters and Timers are:

 

Counters

Timers

 

Control Bit

Offset

Control Bit

Offset

 

CU

15

EN

15

 

CD

14

TT

14

 

DN

13

DN

13

 

OV

12

 

 

 

UN

11

 

 

More information

Allen-Bradley DF-1 Supported Devices.