Rainbow Electronics FARGO MAESTRO 100 (with TCP_IP) - Manual (Page 623)

I/O Commands
Input/Output Management +WIOM
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WM_DEV_OAT_UGD_049 - 001 VOLUME 4 August 23, 2007
22.1.3 Parameters and Defined Values
<Gpiold>: GPIO Index
range: 1-44
<GpioDir>: I/O direction or configuration
0 input (default value)
1 output
2 used by a feature (only in read mode)
<GpioVal>: I/O state
0 <Gpiold> is reset/low
1 <Gpiold> is set/high
22.1.4 Parameter Storage
The <GpioDir> and <GpioVal> parameters are stored in EEPROM without using the
AT&W command.