Rockwell-automation 1761 MicroLogix 1000 Programmable Controllers Manual de usuario descargar pdf (Pagina 293)

Programming Reference

B–5

Address Bit Classification Description

S:1/0 to

S:1/4

Controller

Mode Status/

Status Bits 0–4 function as follows:

0000

= (

)

emote

ownload in progress

0 000 R

S:1/4 Mode Status/

Control

0000

= (

)

emote

ownload in progress

0 0001 = (1) Remote Program mode

0 0011 = (3) Suspend Idle (operation halted by

11 = (3) Suspend Idle (operation halted

SUS instruction execution)

0 0110 = (6) Remote Run mode

00 7 R c

00 0 6 R R

0 0111 = (7) Remote Test continuous mode

0 1000 = (8) Remote Test single scan mode

S:1/5 Forces

Enabled

Status This bit is set by the controller (1) to indicate

that forces are always enabled.

S:1/6 Forces

Installed

Status This bit is set by the controller to indicate that

forces have been set by the user.

S:1/7 Comms Active Status This bit is set when the controller receives valid

data from the communication port. For DF1

protocols, the bit is reset if the controller does

not receive valid data from the programming

port for 10 seconds.

Note: In DF1 half-duplex mode, simple polls

by the DF1 master or replies to received

messages will not reset the timer. A poll with a

command is required to reset the timer.

For DH-485, the bit is reset as soon as the

DH-485 link layer determines that no other

devices are active on the link.

Application Note: For DF1 half-duplex, you

can use this bit to enable a timer (via an XIO

instruction) to sense whether the DF1 master is

actively communicating to the slave. The

preset of the timer is determined by the total

network timing.

S:1/8 Fault Override

at Powerup

Static

Configuration

When set, this bit causes the controller to clear

the Major Error Halted bit S:1/13 and Minor

error bits S:5/0 to S:5/7 on power up if the

processor had previously been in the REM Run

mode and had faulted. The controller then

attempts to enter the REM Run mode. Set this

bit offline only.

Reference

1 2 ... 288 289 290 291 292 293 294 295 296 297 298 ... 421 422

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