Westinghouse 1C31166G02 EMERSON Controller System

Description

This 1C31166G02 bit configures the module (write) or indicates the configuration

state of the module (read). A “1” indicates that the module is configured.

Note that until the module is configured, reading from addresses 0

through 11 (B in Hex) will produce an attention status.

Bit 1: This bit (write “1”) forces the module into the error state, resulting in the

error LED being lit. The 1C31166G02 read of bit “1” indicates that there is an internal

module error, or the Controller has forced the module into the error

state. The state of this bit is always reflected by the module’s Internal

Error LED. Whenever this bit is set, an attention status is returned to the

Controller when addresses # through 11 (B in Hex) are read.

This bit (read) indicates that the module is in the “Warming” state. This

state exists after power up and terminates after 8.16 seconds. The mod

ule will be in the error condition during the 1C31166G02 warm up period.

Bits 5-6: These bits are not used and are read as “0” under normal operation.

Bit 7: This bit (read) is the result of a checksum test of the EEPROM. A failure

of this test can indicate a bad EEPROM, but it typically indicates that

the module has not been calibrated. A “0” indicates that there is no error

condition. If an error is present, the module error LED is lit. The point

fault bit will also be set as all the point data is not calibrated. The “1”

state of this bit indicates an unrecoverable error condition in the field.

Bit 8: The 1C31166G02 status of this bit (read) indicates the conversion rate of the input

module, write to this bit configures the conversion rate of A/D convert

ers as shown below.

This bit (write) is used to initiate self-calibration. The sampling rate dur

ing self-calibration will be 2 per second. The status (read) bit is not used

and is read as “0” under normal operation

Bit 12: This bit is not used and is read as “0” under normal operation.

Bit 13: This bit (read) indicates that the module has internal memory error

(FLASH checksum, Register or Static RAM error). If this error is

present, the module error LED is lit, the point fault bit will also be set as

the condition of the module is undetermined.

This bit, if set, indicates that the temperature sensor has failed.

Bit 15: This bit indicates the point fault status of the module. It is the logical

“OR” of the eight individual point-quality status bits, plus the bits 1, 4,

7, and 13 of this register. A “0” indicates that 1C31166G02 all eight points have good

quality and no module error exists. When bits 1, 4, 7 or 13 of the Status

Register are not set, this bit (when set to “1”) indicates that at least one

of the points has bad quality. A subsequent read of the Point Quality

Register (Address 12, C in Hex) will reveal the point(s) that have bad

quality. The Address 12 (C in Hex) Point Quality Register contains data

only when the module fault is due to a bad point quality

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