[foxboro] How to reverse a 16 bit register - PAKIN

We are converting gateways to FDSI. We need to reverse a two byte register 
(Bits 1 to 16).
Our goal was to insert a PAKIN upstream of our MCIN & CIN, which used to read 
the MDSCAN.
Below is from B0193AX - PAKIN, which reverses Bits 1 to 32 only.
PKIOPT
Packed Input Option is a short integer input that specifies whether the
input bit stream from the device is packed in the PAKCIN output parameter
with or without reversing the bit order as follows:
1 = No bit reversal (Bits 1 to 32 are mapped bit-by-bit to Bits 1 to 32)
3 = Bit reversal (Bits 1 to 32 are mapped bit-by-bit to Bits 32 to 1)

Where is 2 = Bit reversal (Bits 1 to 16 are mapped bit-by-bit to Bits 16 to 
1)????

We are trying to emulate the MCIN blocks IOMOPT = 2, which allows reversing 16 
bits.
One option we found is the IIN block to read the register directly, then 
connect to a MCIN to allow bit selection - poor use of blocks.

Thanks,

bud/



 
 
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