User`s manual

133

Chapter 5 Remote Interface Reference

3488 Mode Commands

VIEW <channel_address>

Shows the state, either open or closed of a particular channel or a DIO

bit. The 3499A/B/C responds with the string “OPEN 1” if the specified

channel/bit is open. If the specified channel/bit is closed, the 3499A/B/C

responds with the string “CLOSED 0”.

The channel_address has the form @snn, where s is the slot number and

nn is the channel number. For all mainframes, slot 0 refers to the 3499A/

B/C control board. Valid slot numbers are:

The channel number, nn, is plug-in module dependent. Channel

numbers for plug-in modules are listed on page 70.

Only one channel/bit can be “viewed” each time with this command.

VIEW can only be used to look at input bits on a digital I/O module. If an

attempt is made to VIEW an output bit, the 8-bit port where the bit is

located will revert to an input port.

OUTPUT 709; “VIEW 105”

! View channel 5 on slot 1.

ENTER 709; A$

! Input the response from the

3499A/B/C.

DISP A$

! A$ will either be “OPEN 1”

or “CLOSED 0”.

- or -

OUTPUT 709; “VIEW 105” ! View channel 5 on slot1.

ENTER 709; A

! “A” will be either 1 or 0 (open

or closed, respectively)

DISP A

3499A slots 0 through 5

3499B slots 0 through 2

3499C slots 0 through 9