PCB Piezotronics 482M179, Installation And Operating Manual, Page: 28 / 37

MODELS 483C30, 483C50, 482M179 AND 483M217 GENERAL OPERATION MANUAL
19
•
ICP
®
2
•
Multi-Charge option of 10mV/pc sensitivity 3
•
Multi-Charge option of 1.0mV/pc sensitivity 4
•
Multi-Charge option of 0.1mV/pc sensitivity 5
•
Isolated ICP
®
6
•
Isolated Multi-Charge option of 10mV/pc sensitivity 7
•
Isolated Multi-Charge option of 1.0mV/pc sensitivity 8
•
Isolated Multi-Charge option of 0.1mV/pc sensitivity 9
NOTE: Not all input options are valid for all models. Check your models specification for applicable input
modes
Setting:
1:1:INPT= 2\r\n (unit 1, channel 1 input mode set to ICP)
Setting Response: 1:INPT:ok
Query:
The INPT query returns the channels input mode selection
Query Format: Unit#:Ch#:CMD?
Response format: Unit#:Cmd:Ch#:= <inpt>;
Query: 1:1:INPT?
Response: 1:INPT:1= 2;
Global INPT Query: 1:0:INPT?
Global INPT Response: 1:INPT:1= 2.0;2= 2.0;3= 2.0;4= 2.0;
IEXC
The IEXC command sets the current excitation level for ICP
®
mode. This is a UNIT setting (i.e. all channels
will get set to this value) on 482C50 and 482M179 models. As a result, if the channel was in Voltage mode and
this value gets set > 0, then the channel’s input mode will revert to ICP
®
mode. Likewise if the channel is in
ICP
®
mode and current excitation is turned off (0) then the channel input mode changes to Voltage.
On the 483M217 unit the IEXC command is a channel setting. Each channel’s current excitation level can be
set individually and the other channels in the unit are not affected as with the 482C50 and 482M179 models.
With the 483M217 unit some channels can be in Voltage mode while others are in ICP
®
mode
The current excitation value is sent as an integer value from 0 (off) to 20mA.
Setting:
1:1:IEXC= 4\r\n (unit 1, channel 1 but all channels are set to 4mA)
Setting Response: 1:IEXC:ok
Query:
The IEXC query returns the units excitation value.
Query Format: Unit#:Ch#:CMD?
Response format: Unit#:Cmd:Ch#:= <IEXC>;
Query: 1:2:IEXC?
Response: 1:IEXC:1=4;
Note: Unit setting responses return the lowest channel number of the board that is
responding. In the example above the query requested channel 2’s setting but got channel 1 in
response because all channels are the same.