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2 mA Loop
Logic 1 . . . . . . . . . . . .
≥
1.6 mA = start bit
Logic 0 . . . . . . . . . . . .
≤
0.2 mA = stop bit
Level . . . . . . . . . . . . . Internal jumper reversible
Voltage drop . . . . . . . . 1 V max at 2 mA.
Max. loop current . . . . 0.5 A.
20 mA Loop
Logic 1 . . . . . . . . . . . .
≥
16 mA = start bit
Logic 0 . . . . . . . . . . . .
≤
2 mA = stop bit
Level . . . . . . . . . . . . . Internal jumper reversible
Voltage drop . . . . . . . . 1 V max at 20 mA.
Max. loop current . . . . 0.5 A.
Bipolar ±5 V
Input impedance . . . . . >12 K
Ω
RS-423
Logic 1 . . . . . . . . . . . .
≥
0.5 V = start bit
Logic 0 . . . . . . . . . . . .
≤
0 V = stop bit
Open line . . . . . . . . . . Idle
Level . . . . . . . . . . . . . Internal jumper reversible
Maximum input . . . . . ±7 V.
Bipolar ±15V
Input impedance . . . . . >30 K
Ω
RS-232
Logic 1 . . . . . . . . . . . .
≥
3 V = start bit
(Default
Logic 0 . . . . . . . . . . . .
≤
-3 V = stop bit
Setting)
Open line . . . . . . . . . . Idle
Level . . . . . . . . . . . . . Internal jumper reversible
Maximum input . . . . . ±15 V.
Differential
Threshold . . . . . . . . . . Less than ±0.2 V. Internal charge.
RS422/485
Hysteresis . . . . . . . . . 70 mV typical
Input impedance . . . . . >12 K
Ω
Max. diff. input . . . . . . ±12 V.
Max. Volt. relative to
signal common . . . . . . +12/-7 V.
Termination . . . . . . . . 121
Ω
jumper selectable
Receiver loop
. . . . . . . . . . . . . . . . . 2 mA or 20 mA ±20%
Source
Open circuit voltage . . 5 V. ±5%
Compliance . . . . . . . . 3 V at 2 or 20 mA.
HANDSHAKE . . . . . . . . . . . . . . . . . .
No handshake required, terminal accepts continuous data.
ENVIRONMENTAL
Operating temperature . . . . . . . 0 to +50 ºC (32 to 122 ºF).
Storage temperature . . . . . . . . -20 to +85 º C (-4 to 185 ºF).
Relative humidity . . . . . . . . . . . 0 to 85 % not condensed.
Protection . . . . . . . . . . . . . . . . IP65. (Front part only).
MECHANICAL
Case material . . . . . . . . . . . . . Aluminium extruded.
Finished . . . . . . . . . . . . . . . . . . Anodized, black colour.
For dimensions, panel cut-out, depth and weight see table on page 20
ELECTRICAL
Standard power supply . . . . . . 230 Vac. ±10% 50 / 60 Hz.
Consumption . . . . . . . . . . . . . . See table on page 20.