MTS Series 793 - Manual (Page 78)

FlexTest GT/TestStar IIm controllers
On FlexTest GT/TestStar IIm controllers, the HSM is connected to J28A ---J28B on the Model 493.74 HSM
Transition Board mounted in the rear panel chassis. Each HSM transition board controls up to two stations
and the chassis supports up to four stations.
TestStar IIs controllers
On TestStar IIs controllers, the HSM is connected to J20 (proportional) or J28 (solenoid) on the rear panel
of the TestStar IIs chassis.
If your TestStar IIs system is connected directly to an HPU, select HPU in the Power list.
FlexTest SE controllers
On FlexTest SE controllers, the HSM is connected to J28 on the Model 493.42 System I/O Board mounted
in the rear panel chassis. The system I/O board controls a single HSM.
FlexTest 40
On FlexTest 40 controllers, the HSM is connected to J28 on the Model 494.41 System I/O Board mounted
in the rear panel chassis. The System I/O board controls a single HSM (includes proportional control).
FlexTest 60/100/200 controllers
On FlexTest 60/100/200 controllers, the HSM is connected to J28A ---J28B on the Model 494.74 Single Slot
HSM Transition Board mounted in the rear panel chassis. Each HSM transition board controls up to two HSMs
(does not include proportional control).
Note:
FlexTest 60/100/200 controllers can also use the Model 493.74 HSM Transition Board (includes
proportional control).
About Update Rates
You must specify the update rate for each program channel you define. Update rate options include System
Rate and Low Rate.
System rate
The system rate specified in the .hwi file is the normal rate used for testing. This rate varies with the type of
controller you are using.
Low rate
In some instances, it may be desirable to program an external controller at a low rate to conserve processor
resources. Typically, low-rate channels are used with devices that do not require frequent setpoint updates
such as temperature controllers.
Your system’s low rate is defined in your .hwi file as the Low System Rate. The default low rate for all systems
is 25.6 Hz.
Update rates using serial connectors
Serial connectors on the rear panel of the FlexTest and TestStar controllers support two-way communication
with Eurotherm Model 2200 and 2400 Temperature Controllers.
78 MTS Series 793 Control Software
Station Builder