Product specifications

Page 98 AD-4404
9.4.
9.4.9.4.
9.4. Built
BuiltBuilt
Built-
--
-in Current L
in Current Lin Current L
in Current Loop Output
oop Outputoop Output
oop Output
The interface can be used to connect a printer or external monitor.
Specifications
Transmission system EIA RS-232C, Asynchronous, bi-directional, half-duplex
Current 1 = 20mA, 0 = 0 mA, external DC current source
Data length 7 bits
Start bit 1 bit
Parity bit Even
Stop bits 1 bit
Baud rate 600 bps, 1200 bps, 2400 bps
Code ASCII code
9.4.1.
9.4.1.9.4.1.
9.4.1. Connection
ConnectionConnection
Connection
The current loop output has no polarity.
Use an external DC current source.
Connect the FG terminal when using a shielded cable.
9.4.2.
9.4.2.9.4.2.
9.4.2. Communication Modes
Communication ModesCommunication Modes
Communication Modes
There are six following.
Stream Mode
The data is output on each display update. If the data can not be output completely
due to a slow baud rate, the data is output at the next update.
Auto Print Mode
The comparison result is printed automatically.
Manual Print Mode
When the preset print key is pressed or terminal is connected, data is output.
Current loo
p
Out
p
ut
RS-485
A
B
SG
C.LOOP
FG
Shield
Current loo
p
Out
p
ut
AD-4404 inside
The CURRENT
LOOP terminals do
not have polarity.