11
3
CONNECTING WITH INDICATORS
11
CONNECTING WI
TH INDICATORS
Chapter
3
3-1.
SI/F (Two-Wire Serial Interface)
The M252B is equipped with a SI/F interface to connect it with UNIPULSE-manufactured digital
indicators or load cell indicators as standard. In this chapter, connection with indicators through the
SI/F is explained.
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About the SI/F
The UNIPULSE's original SI/F is an interface to connect our F series indicators and printer, or
peripheral equipment, such as an external display. SI/F-compatible products can simply be
connected and used without a wareness of data content and the hardware specifications.
Specifications of the SI/F
Connection
Two-wire, nonpolar
Transmission distance
Parallel two-core cable: 30m
Shielded cable: 300m
Transmission data
Measuring/metering data, status information (result of comparison, MD,
zero alarm, etc.), error information, automatic print command, etc.
Signal standards
Signal level:
Photocoupler-isolated current signal
Transmission system: Start/stop synchronous system
Transmission speed:
600bps
Data bit:
8bit
Start bit:
1bit
Stop bit:
1bit
Parity:
ODD
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About the SI/F of the M252B
The M252B is equipped with a 2-ch SI/F (Ach and Bch). 6-7PIN and 8-9PIN on the rear terminal
block correspond to Ach and Bch, respectively.
3
CONNECTING WITH INDICATORS
Содержание M525B
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