CPS100 SERIES OPERATION MANUAL
SECTION 5:
Entire Contents Copyright
2018 by Adaptive Power Systems, Inc. (APS) • All Rights Reserved • No reproduction without written authorization from APS.
APS CPS100 Series Power Source Operation Manual
Page 62 of 231
The GPIB connector pin-out is defined by the IEEE-488 standard and shown for reference
only in Table 5-7 below.
No
Name
Function
1
DIO1
Data line 1
2
DIO2
Data line 2
3
DIO3
Data line 3
4
DIO4
Data line 4
5
EOI
End or Identify
6
DAV
Data Valid
7
NRFD
Not Ready For Data
8
NDAC
No Data Accepted
9
IFC
Interface Clear
10
SRQ
Service Request
11
ATN
Attention
12
SHIELD
Shield
13
DIO5
Data line 5
14
DIO6
Data line 6
15
DIO7
Data line 7
16
REN
Remote Enable
18 - 23
GND
Ground
24
SGND
Signal Ground
Table 5-7: IEEE-488 Connector Pin Assignments
5.10.6
Remote Control Commands
The USB, RS232, LAN and GPIB interfaces use the same command set for setting of test
parameters. However, there are some functions of the GPIB 488.2 interface that are not
available through USB/RS-232/LAN. The IEEE-488 interface option for the CPS series
conforms to the requirements of the IEEE-488.2 standard.
These interfaces provide all of the control commands and parameter setting commands of
the GPIB interface with the exception of the 488.2 Common Command the Status Reporting
commands and SRQ capability.
For information on supported programming commands, refer to section 7, “Remote Control
Programming”. The identification command *IDN is also available through USB, RS-232 and
LAN interfaces.
The RS485 Serial interface uses ModBUS command packets instead of the SPCI message
based control commands. ModBUS programming is register based instead of message based
and requires values to be put in specific register locations to control the output settings or
register read backs for measurement data. This communication protocol is covered in a
separate manual, “APS_CPS100_Series_AC_Source_MODBUS_Protocol_Guide-PN160954-
10_v1.1.pdf” part number 160954-10 available for download at
