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About 1785-V80B
The AB 1785-V80B is a PLC-5 Series Programmable Logic Controller.
The 1785-V80B processor belongs to a series of PLC-5 processors.
This processor has the same instruction set as the enhanced PLC-5
processors PLC-5/80. Additionally, the 1785-V80B is also compliant
with the C.1 VMEbus specification. That means that the 1785-V80B
processor can be connected directly to a VMEbus system bus, and
that 1785-V80B can be used with other VMEbus CPU modules. 1785-V80B
can interface with VMEbus I/O modules through a VMEbus
communication interface. 1785-V80B processors do not use EEPROM
memory modules.
1785-V80B has a memory of up to 100,000 words with a limit of
32,000 words per data table file. The 1785-V80B can address total
I/O of 2944, and those I/O can be arranged complementary as 2944 of
them are input and 2955 are output I/O. 2944 analog I/O can be
addressed by 1785-V80B.
1785-V80B has program scan time of either 0.5 ms per 1000 words
with bit logic, or 2 ms per 1000 words which is typical. The
extended local I/O scan time is 0.5 ms, and it is 10 ms per rack
for transmission rate 57.6 kbps, and 7ms for 115.2 kbps and 3 ms
for 230 kbps.
The following transmission rates are available for 1785-V80B: 57.6
kbps, 115.2 kbps, or 230 kbps.
The 1785-V80B processor has 4 ports that can be configured either
as DH+ or remote I/O ports, but there is no port for extended local
I/O ports. The maximum number of I/O racks that can be connected to
1785-V80B is 23. The maximum number of I/O chassis that can be
connected remotely is 92, and it is not possible to connect I/O
chassis as extended local. This processor has one RS232 port.
On the front panel of the 1785-V80B there is following
communication channels: 0, 1A, 1B, 2A, and 2B.
Channel 0 has a 25-pin D-shell connector. It is an Optically
coupled serial port which supports EIA RS-232C and supports ASCII
or DF1 protocol. Channels 1A, 1B, 2A, and 2B each have a 3-pin
connector. It is has user configurable ports that support scanner,
adapter, and Data Highway Plus (DH+) communication modes.
The programming terminal is equipped with an 8-pin mini-DIN
connector (2 - connectors) and used for programming purposes.
Ladder programs from enhanced PLC-5/40 processor can run in the
1785-V80B with the same scan time. 1785-V80B has few features that
are not presented in other enhanced PLC-5/80 processors. 1785-V80B
defines a special data file called "VME status file", this file
gives ladder programs the ability to control and monitor certain
VMEbus information. Additionally, the Ladder MSG instruction is
extended to allow ladder programs to perform VMEbus data transfers
and generate VMEbus interrupts.
1786-V80B can be programmed and monitored by use of DH+ link, or
use serial communication - using channel 0, or via VMEbus backplane
connection.
The VMEbus is a well-known computer bus standard, developed
originally for the Motorola 68000 line of CPUs.
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Our advantages:
Industrial automation spare parts failure often causes tens of
thousands of business losses to the enterprise.Moore LIMITED is the
world's leading provider of high quality industrial automation
spare parts, whether it is a new spare parts, or outdated /
discontinued parts, and the technology is dedicated to the normal
operation of the enterprise at the best cost, the best quality and
efficient way.Whether it is customer service, work efficiency or
delivery speed, we always strive for excellence and to be better
and better.
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supply all kind of the automaiton parts,if you want to purchase
parts pls send the parts model to my mail, I will prompt reply you
asa I receive the mail.Hope anyone enquire from us.
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