Instruction Manual

3-6

IM 77J04J11-01E 1st Edition : 2006.08.25-00

3.2 Commands

3.2.1 List of Commands

The following shows lists of commands available in PC link communication. Their details

are explained in the description of each command.

(1) Bit-basis Access Commands Dedicated to I Relays

BRD

Command Description Number of Bits to be Handled

Bit-basis read

BRR Bit-basis random read

BRS Specifies registers to be monitored on a bit-by-bit basis.

1 to 256 bits

BWR Bit-basis write 1 to 256 bits

1 to 32 bits

BRW Bit-basis random write 1 to 32 bits

1 to 32 bits

Bit-basis monitoring

BRM

(2) Word-basis Access Commands

WRD

Command Description Number of Words to be Handled

Word-basis read

WWR

Word-basis write

WRR

Word-basis random read

WRW

Word-basis random write

WRS

Specifies registers to be monitored on a word-by-word basis.

Word-basis monitoring

WRM

1 to 64 words

1 to 32 words

(3) Information Command

INF

Reads model, input range code, number of alarms

and revision.

Command Description Number of Units to be Handled