IEEE/GPIB interface card with RS232
This interface card is an internal option for following power supply series and is used to externally control power supplies with a PC and an appropriate software:
With the IEEE/RS232 interfaces the power supply obtains a standardized interface after the specification IEEE 488, as well as a RS232, which are used to remotely control a power supply with SCPI commands. Both interfaces can be used simultaneously or seperately. In order to use the IEEE bus, an extension card for the controlling PC is required, for the use of the RS232 interface a simple null modem cable is sufficient. Any necessary parameter (GPIB address, baud rate) is set via DIP switches on the card. A software is not included., but there are LabView VIs available for the GPIB port. Both interfaces use the same command set, they only differ in the way of physical data transmission and speed (RS232 is much slower because of the max. baud rate of 9600 baud). The card realizes a digital-to-analog conversion in order to connect the analogue power supply to a digital control device (PC).
Following functions can be performed with the external control:
- set voltage and current seperately (nominal values)
- measure voltage and current seperately (actual values)
- program identification (character string)
- calibration to certain end values for current/voltage
- switch power supply on/off (standby)
- query status signals (overtemperature, overvoltage, current control mode),
depending on the type of power supply
- Click to magnify
CAN interface card
The internal CAN interface card is optionally available for the power supply types:
The interface provides the common CAN functionality. It is equipped with 1x input and 1x output (Sub-D plug/socket, 9pole) and an address setting switch, all led out at the back of the unit.
Software or drivers are not available. The CAN protocol it described in the manual.
Following functios can be realized with the CAN interface in combination with a power supply:
- Set: output voltage
- Set: output current
- Measure: output voltage
- Measure: output current
- Indication: operation mode CC / CV
- Indication: overtemperature shutdown
- Indication: overvoltage shutdown
- Indication: mains failurel
- Set status: standby
- Set status: set Local mode
In order to control a power supply via the CAN interface, a PC with another CAN interface is required. Up to 63 power supplies can be controlled on one CAN bus.