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The GE-Emerson IC693ALG391 2-Channel Analog Current Output Module provides two output channels, each capable of converting 12 bits of binary (digital) data to an analog output for use as required by relevant applications. The Analog Current Output module is capable of providing outputs in the range of 0 to 20mA. The resolution of the converted signal is 12 bits binary (1 part in 4,096). The sign bit is not used in the conversion process. Both channels are updated on every scan (about 5 milliseconds). User data in the %AQ registers is in a 16-bit 2’s complement format. The 13 most significant bits from the %AQ register are converted to sign magnitude by the PLC and sent to the module. Twelve of the bits are used by the D/A converter; the 13th bit (sign) is used to determine if negative data was sent to the module.
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