GE IC693ALG442 Analog I/O Module

In the 4to20mArange,userdataisscaledsothat4mAcorrespondstoacountof0and20mA corresponds to a count of 32000. The other ranges are selected by changing the configuration parameters using the Logicmaster 90-30/20/Micro configurator software or the Hand-Held Programmer. In the 0to20mArangeuser data is scaled so that 0 mA corresponds to a count of 0 and 20 mA corresponds to a count of 32000. Full 12-bit resolution is available over the 0 to 20 mA range. can also be selected. When this range is selected, 0 mA corresponds 8000, 4 mA corresponds to a count of 0 (zero) and 20 mA corresponds to a count of +32000.

The Enhanced range uses the same hardware as the 0 to 20 mA range but automatically provides 4 to 20 mA range scaling with the exception that negative digital values are provided to the user for input current levels between 4 mA and 0 mA.

This gives you the capability of A4to20mAEnhancedrangecan also be selected. When this range is selected, 0 mA corresponds to a count of–8000, 4 mA corresponds to a count of 0 (zero) and 20 mA corresponds to a count of +32000. The Enhanced range uses the same hardware as the 0 to 20 mA range but automatically provides 4 to 20 mA range scaling with the exception that negative digital values are provided to the user for input current levels between 4 mA and 0 mA. This gives you the capability of selecting a low alarm limit that detects when the input current falls from 4 mA to 0 mA, which provides for open-wire fault detection in 4 to 20 mA applications. High and Low alarm limits are available on all ranges. Ranges can be configured on a per channel basis. provides 4 to 20 mA range scaling with the exception that negative digital values are provided to the user for input current levels between 4 mA and 0 mA.

This gives you the capability of selecting a low alarm limit that detects when the input current falls from 4 mA to 0 mA, which provides for open-wire fault detection in 4 to 20 mA applications. High and Low alarm limits are selecting a low alarm limit that detects when the input current falls from 4 mA to 0 mA, which provides for open-wire fault detection in 4 to 20 mA applications. High and Low alarm limits are available on all ranges. Ranges can be configured on a per channel basis. s complement format (0 to 20 mA range only). s complement format (0 to 20 mA range only).

Resolution of the converted signal is 12 bits binary (1 part in 4096) on the 0 to 20 mA range. The placement of the 12 bits from the A/D converter in the %AI data word is shown below. User data in the %AI registers is in 16-bit 2’s complement format (0 to 20 mA range only). Resolution of the converted signal is 12 bits binary (1 part in 4096) on the 0 to 20 mA range. The placement of the 12 bits from the A/D converter in the %AI data word is shown below. Resolution of the converted signal is 12 bits binary (1 part in 4096) on the 0 to 20 mA range.