Bosch EXAConnecT II + I/O-Module II Manual Original página 29

OBJ_BUCH-816-001.book Page 29 Wednesday, October 30, 2013 2:06 PM
Note: Note down the static IP address on the EXAConnecT or
in a directory.
If the IP address is not known, it is possible to set the IP ad-
dress 10.10.10.10 using the DIP switch 16 (see "Connection
Work", page 27).
– Click on the Apply button.
▷ A notification window prompting a system restart is dis-
played.
– Restart the system (see "System Reset", page 33).
If you are operating more than one EXAConnecT, you have to
assign various static IP addresses or various names to enable
clear identification.
– Select the Get network parameters automatically
(DHCP) option.
– Enter a host name into the input field (standard value:
XXXXXXXXX).
– Restart the system (see "System Reset", page 33).
Now you can open the configuration page of the EXAConnecT
by entering the host name in the address bar of the web
browser.
Connecting an I/O Module
The I/O module provides 16 additional digital inputs and 16
additional digital outputs which can be analysed or controlled
by the access point.
The inputs and outputs use the same ground potential and are
not individually insulated against each other. One ground ter-
minal (GND) is provided per two input or output terminals on
the I/O strip. All ground terminals on all terminal strips have
the same potential.
Power Supply
The 24 V supply can be performed from the access point (24
V power output of the access point: terminal strip 18): Here it
must be noted that the I/O module is then on the same ground
potential as the access point.
If you want to separate them from each other, an additional
external power supply unit must be provided to supply the I/O
module. The only connection to the access point is then the
potential-free RS422 interface in the access point. In this
case, the separation of the ground potentials of the access
point and the I/O module is then retained.
The RS422 interface allows long cable connections of up to
1000 m between access point and I/O module. The I/O mod-
ule should be given a separate power supply if the distance to
the access point is 20 m or more.
RS422 connection to the access point (see figure E)
Connection of the I/O module to the access point is per-
formed via an RS422 interface.
– Remove the maintenance cover plate 8 (see "Connection
Work", page 27).
– Loosen the locknut 12 on the middle left-hand cable gland
11 by turning it counterclockwise.
– Pull the plugless end of a 5-wire mains cable 26 through
the opening in the cable gland 12 to the terminal strip 18.
Bosch Power Tools
The RS422 interfaces must be wired according to the follow-
ing table.
EXAConnecT I/O module
OY+ 1IA+
OZ- 1IB-
IA+ 1OY+
IB- 1OZ-
GND GND
– Check whether the cable is securely fitted. Then retighten
the locknut 12 on the cable gland 11 by turning it clock-
wise.
Cascading (see figure F)
It is also possible to cascade two I/O modules in order to in-
crease the number of available inputs and outputs to 32. To
do so, the second I/O module is connected to the free RS422
interface of the first I/O module.
Output commands from the access point for the 2nd I/O mod-
ule are automatically forwarded from the 1st I/O module to
the 2nd I/O module. Changes to the input statuses on the 2nd
I/O module are also automatically forwarded from the 1st I/O
module to the access point.
The RS422 interfaces must be wired according to the follow-
ing table.
1st I/O module 2nd I/O module
2OY+ 1IA+
2OZ- 1IB-
2IA+ 1OY+
2IB- 1OZ-
GND GND
Switching of the digital inputs (see figure G)
The digital inputs are switched in the I/O module with a pro-
tective circuit before an optocoupler input (diode).
The following input voltage ranges are permitted:
– HIGH signal 3.2–26.0 V
– LOW signal 0.0–1.3 V
Passive elements (e.g. buttons or switches) or active ele-
ments (e.g. digital PLC outputs) can be activated.
However, passive elements require an additional voltage
source for this.
The required switching voltage for a button or switch can also
be taken from the supply of the I/O module or the access point
because the required current is only minimal.
The inputs of the I/O module are sampled every 50 ms. Ap-
plied input signals should therefore not fall below a phase du-
ration of 100 ms, in order to be definitely detected.
Switching of the digital outputs (see figure H)
The digital outputs of the I/O module are electronic power
switches (Power MOSFET) with low On resistance
(< 0.1 Ohm). No potential is delivered, rather switching is on-
ly to ground. The supply of the devices that have to be
switched must therefore be ensured by external voltag-
es/power supply units.
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