- 48K-word PLC-5/V40 controller for as many as 1,920 I/O points
- Supports up to 15 remote-I/O racks and 60 remote chassis
- Four DH+/remote-I/O ports, one RS-232 port and no extended-local I/O port
1785-V40B places PLC-5/V40 control functions in a VMEbus processor assembly.
Its A16 register space and A24 general-purpose memory interface let the VME host exchange status and application data with the controller.
A valid replacement must retain the remote-rack map, four channel assignments, link rates, VME addressing and battery-backed controller image.
Availability, condition, price, and shipping time for 1785-V40B are confirmed during quotation.
Allen-Bradley 1785-V40B PLC-5/V40 VMEbus Processor Manuals, Product Family, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Allocate A16 address space for 1785-V40B configuration and status registers
- Reserve the required A24 space when general-purpose VME memory is used
- Verify VME interrupt levels, slot position and backplane loading before startup
- Map no more than 15 remote-I/O racks and 60 remote chassis to 1785-V40B
- Record whether each of the four channels operates as DH+ or remote I/O
- Preserve the selected 57.6, 115.2 or 230 kbit/s rate and the separate RS-232 setup
- Archive the 1785-V40B program and all required data-table files before removal
- Check the BATT indication and follow the documented 1770-WV/A battery procedure
- Restore the VME allocation and prove every configured DH+ and remote-I/O path
- PLC-5/VME systems requiring up to 48K words and 1,920 I/O points
- Control architectures using as many as 15 remote-I/O racks without extended-local I/O
- VME-hosted applications exchanging data through PLC-5/VME registers and memory