O P E R AT I N G A N D I N STA L L AT I O N I N ST R U CT I O N S SYST E M V E N T E C H LG 5 0 0 P
PAG E 3 2
PI-HMI is connected to the PI Air2
Master by means of a Modbus cable.
The Modbus cable can be connected to
the PI-HMI by means of the RJ12 6P4C
port or four single-wire screw terminals.
Whether the RJ12 6P4C port or screw
terminals are used does not influence
the available functions or operation.
6.2.5.3 Modbus connection
Connect the Modbus cable to the Modbus
port for a hand terminal on the PI Air2
Master and to the RJ12 6P4C port on the
PI-HMI
(see illus. 5)
.
6.2.5.4 Modbus RJ12 6P4C
CH1
CH2
RS485 MODBUS
RS485 MODBU
S
Bus “A”
Bus “B”
N.C.
+24V
GND
GND
+24V
out
+24V
out
N.C.
GND
Illustration 5: Connecting Modbus via the
RJ12 6P4C port
Connect the Modbus cable to the Modbus
port for a hand terminal on the PI Air2
Master and to the corresponding screw
terminals on the PI-HMI
(see illus. 6)
.
RJ12
Screw terminals
1 +24
V
2 GND
(earth)
3 Bus
„B“
4 Bus
„A“
5 +24
V
6 GND
(earth)
6.2.5.5 Modbus screw terminals
CH1
CH2
RS485 MODBUS
RS485 MODBUS
Bus “A
”
Bus “B
”
+24V
GND
out
+24V
N.C.
GND
+24V
out
N.C.
GND
6
1
6 .. 1
Illustration 6: Connecting Modbus via the
screw terminals
6.2.6 Technical data
Supply voltage
24 V DC +/-10%
Cable dimensions
10 × max. 0.75 mm²
Relative humidity
0-95 % (non-condensing)
Operating temperature
-10/+40 °C
Enclosure rating
IP21 (EN 60529)
Port
1 × RJ12 6P4C
-
10 Schraubklemmen
Dimensions
80×121×42 mm
(see illus. 4)
Installation depth
22 mm
Max. power consumption
900 mW
Standby power consumption
600 mW
