How do I connect my HI 2151/30WC or HI 2110WI to my PLC5?

What should I use to connect my PLC-5 to my HI 2151/30WC, HI 2110WI or our old HI 2151/20WC? Can I do block transfers or am I restricted to discrete RIO? My channel 1A is tied up with DH+ and I am starting to think an AB 1771-SN card is the direction I should be going? 

The only way to connect the PLC-5 to the HI 2151/20WC, HI 2151/30WC, or the HI 2110WI, is to use Remote I/O. If your PLC-5 only has channel 1A and that is assigned to DH+, then the AB 1771-SN would need to be used. The AB 1771-SN is a Rockwell module and you would need to check with Rockwell for its capabilities and/or limitations on doing block transfers. The HI 2151/20WC, HI 2151/30WC and the HI 2110WI has some discrete capabilities. These are reading the weight and some status conditions and the ability to tare the net weight. All other data would be read/written using block transfers.