5
Remote Operation
Introduction
Chapter 3 introduced you to the basics of remote operation and provided a few simple examples using a Series 200 computer as the
Four major
1.
2.Programming Syntax
3.Initial Conditions
4.Power Supply Commands
The
The examples are written in a generic form to make adaptation to your controller easy. You should be familiar with the use of your controller and its instruction set and how the power supply commands can be incorporated in your controller commands. If you are not familiar with the operation of the power supply, you are advised to read through Chapters 2 through 4 first.
Interface Function
Remote control is implemented by the
SH1- Source Handshake
SR1 - Service Request
AH1 - Acceptor Handshake
RL1 - Remote/Local
T6 - Talker
PP1 - Parallel Poll
L4- Listener
DC1 - Device Clear
The source handshake, acceptor handshake, talker and listener functions are implemented by the interface circuits of the power supply and the controller. The ADDR annunciator indicates when the power supply is addressed to listen or talk. (The talker function includes the Serial Poll, see page 62).
Service Request. This is a message which can be initiated by the power supply to request service from the controller. When the supply is requesting service, it asserts the service request (SRQ) line on the
Remote Operation 61