1785-V80B Product datasheet  

1785-V80B Functional Description

The 1785-V80B processor card is part of the PLC-5 series, offering compatibility with the C.1 VMEbus specification, allowing direct connection to VMEbus systems and integration with other VMEbus CPU modules. Unlike other PLC-5 processors, the 1785-V80B processor card does not use EEPROM memory modules.

With a memory capacity of up to 100,000 words, the 1785-V80B processor card can manage up to 32,000 words per data table file and supports 2,944 I/O points, including 2944 analog I/O. Its scan time is 0.5 ms per 1000 words for bit logic or 2 ms per 1000 words in typical conditions. The processor supports transmission rates of 57.6 kbps, 115.2 kbps, and 230 kbps, with a 0.5 ms extended local I/O scan time.

The 1785-V80B processor card has four configurable communication ports for DH+ or remote I/O connections. It can connect up to 23 I/O racks and 92 remote I/O chassis, but does not support extended local I/O chassis. Additionally, it features an RS232 port for serial communication.

For programming, the 1785-V80B processor card runs ladder logic programs from the enhanced PLC-5/40 processor with the same scan time. It also introduces a VME status file to control and monitor VMEbus data, along with extended Ladder MSG instructions for VMEbus data transfers and interrupts. The 1785-V80B processor card can be programmed via DH+, serial communication, or a VMEbus backplane connection.