Unipulse F701+, Operation Manual

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137
9 Specifications
137
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Chapter
9
9-1-4. External signal input/output
9-1-5.
Interface (standard equipment)
9-1-6.
Interface (option)
Compatible plug 57-30240 manufactured by DDK (accessory) or equivalent
Input signal (8 points)
Considered ON when short-circuited with COM terminal by contact
(such as relays and switches) or non-contact (such as transistors and
TTL of open collector output).
Output signal (12 points)
Open collector output for transistor (emitter = COM terminal). Output
turns ON when transistor is ON.
Dedicated two-wire serial interface (SIF)
Description
This interface can be used to connect printers, external display units
and so on made by UNIPULSE.
Transmitting method Asynchronous
Transmitting speed 600 bps
Interface for BCD parallel data output (BCO)
Description
This interface can be used to transmit weight data to printers, external
displays, various data processing devices, etc. I/O signals are
insulated from the internal circuit by a photo-coupler.
Output logic Weight data (5 digits), sign, over, strobe, print command
Output logic Positive/negative logic selectable
Output circuit Open collector
Input signal Logic switch, hold, output data selection
Input circuit Drive by contact or open collector circuit
RS-232C communication interface (232)
Description
This interface can be used to write, change, read, etc. weight data,
various statuses and various setting values through commands from
the host computer.
Signal level RS-232C compatible
Transmitting distance Approx. 15m
Transmitting method Asynchronous, full-duplex communication
Transmitting speed Select from 4800, 9600, 19200, 38400, 57600, 115.2k bps
Bit configuration
Start bit: 1 bit
Character length: Select from 7 or 8 bits
Stop bit: Select from 1 or 2 bits
Parity bit: Select from none, odd, even
Code ASCII
D/A converter (DAC)
Description
Outputs weighing value after converting it to an analog signal of the
current. Zero output weight value and full scale weight value can be
set.
Current output 4 to 20 mA (load resistance 350Ω or less)
D/A conversion rate 100 times/sec
Resolution 1/10000
Over range ±10% of full scale
Current 3.2 to 20.8mA