GE IS200GDDDG1AEC Mark VI circuit board

Description

GE General Electric Technical Specifications: IS200GDDDG1AEC

If the module receives E2 COMMREQ data that indicates an invalid channel or a step height or

ramp time that is out of range, the module IS200GDDDG1AEC will ignore the COMMREQ and return an error code

in the first byte of %I data assigned to the module. The error code will be cleared when a Clear

Errors E2 COMMREQ is sent to the module or when the module is reconfigured. Range

checking of %AQ values received by the IS200GDDDG1AEC module is performed before the values are used in

ramp computations. %AQ data which is out of range is clipped to the nearest valid value by the

module.

The E2 COMMREQ allows you to modify the input alarm limits, set the output ramp mode and

parameters, and clear the %I error code. The E2 COMMREQ uses the standard COMMREQ

format. See Chapter 4 of the Series 90-30/20/Micro PLC CPU Instruction Set Reference

Manual, GFK-0467, and Chapter 8 of the Hand-Held Programmer for IS200GDDDG1AEC Series 9030/90-20/Micro

Programmable Controllers User’s Manual, GFK-0402, for more information on the

COMMREQ

You can change the high and low alarm limits for any of the four input channels. Two modes

are available to modify the alarm data: absolute mode and relative mode.

When using absolute mode, the alarm data sent by the COMMREQ specifies the actual new

alarm value.

When using relative mode, the alarm data specifies the positive or negative change in the

alarm value that is added to the present value.

The module verifies that the new alarm limit requested is not out of range and does not violate

the condition HIGH>LOW. If an invalid request is made to change an alarm value, the

corresponding error code will be returned in the upper four bits of the first byte of %I references

assigned to the module.

E2 COMMREQ Example

The following ladder logic provides an example of setting up E2 COMMREQ data and issuing

the COMMREQ. As with all COMMREQs, it is recommended that the ladder verify the

completion of the E2 COMMREQ in progress before initiating another. This ensures that the

module does not receive COMMREQs faster than it can process them. One way to do this is to

zero the contents of the COMMREQ status (%R0001 in this example) as the COMMREQ is

enabled. Since the status returned for a completed COMMREQ is never zero, a non-zero status

word will then indicate that the COMMREQ has completed.

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The maximum number of 8-Channel Analog Current/Voltage Output modules that can be installed

in a system are:

4 in a system using CPU Models 311, 313, or 323

8 in a system using CPU Model 331

32 in a system using CPU Models 340 and 341

64 in a system using CPU Models 350 – 364

Other Configuration Considerations

When planning the module configuration for your application you must also consider the load

capacity of the installed power supply and the total load requirements of all modules that are

installed in the baseplate.

Refer to Chapter 1 in this manual for details on power supply, baseplate, and module load

requirements. The following table lists the specifications for this module. Note that test conditions,

unless otherwise noted, are: VUSER = 24 VDC at an ambient temperature of 25 C (77 F)

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