National Instruments GPIB-SCSI-A, Руководство пользователя

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Chapter 5 S Mode Functions
© National Instruments Corp. 5-51 GPIB-SCSI-A User Manual
loc - Go to Local *
Type: Bus Management function
Purpose: Use
loc
to put a device in local program mode. In this mode
you can program the device from its front panel. Because a
device usually must be placed in remote program mode before
it can be programmed from the GPIB, the GPIB-SCSI-A
automatically puts the device in remote program mode. You
then use
loc
to return devices to local program mode.
Format:
Bit 7 6 5 4 3 2 1 0
Byte
0 Opcode = CAH
1 GPIB Primary Address Reserved
2 GPIB Secondary Addr. (Opt.) Mode Reserved
3 Reserved Me
4 Reserved
5 Reserved
Remarks: This function is used to configure a specified device for local
program mode. It can be used to configure the GPIB-SCSI-A
as well as other devices. When the Me bit is 0, the
GPIB-SCSI-A configures another device. When the Me bit is
1, the GPIB-SCSI-A configures itself.
The following paragraphs apply when configuring another
device (Me bit is 0):
The argument GPIB Primary Address along with GPIB
Secondary Address indicates the address of the device to
which the GPIB-SCSI-A issues a Go To Local (GTL)
command. To indicate that the GPIB Secondary Address
contains a valid device address, Mode must be set to 1.
If this is the first function you call that requires GPIB
Controller capability, and you have not disabled System
Controller capability with
rsc
, the GPIB-SCSI-A sends