24 • XR35CX I&O Manual
An E2 has three COM ports that can be assigned
for MODBUS communication (COM2). COM ports
can only be used for one function; in other words, if
COM2 is set up as the I/O network, you cannot con-
nect MODBUS devices to COM2. Ensure your E2 is
configured in E2 General Services (
,
Serial tab
) to enable COM4 or COM6.
18.3.E2 Setup of Devices
18.3.1.Set Up Network Ports
Before setting up a device, the port on the E2 that
has the MODBUS cable connected must be set up as
a MODBUS port.
1. Log in to the E2 with Level 4 access.
2. Press
followed by
-
General
Controller Info
.
3. Press
+
to open the
Serial
tab of the General
Controller Info setup screens:
4. This screen will have a “Connection” field for all
COM ports on the E2. Highlight the COM port con-
nection field that will be used for the device, and
press
-
LOOK UP
. From the list of network
types, select
MODBUS
.
5. Four fields will become visible underneath the
COM port connection field, which pertain to the
way the device communicates:
•
Baud -
Default setting is
19.2k
. The baud rate set-
ting should be set to match the baud rate of the de-
vice (
9600
). (All devices connected to the same
COM port should be set to the same baud rate.)
•
Data Size -
Leave this field at the default value (
8
).
•
Parity -
Leave this field at the default value (
None
).
•
Stop Bits -
Leave this field at the default value (
1
).
6. Press
to save changes and exit.
18.3.2.Add and Connect the Device
To enable communications between E2 and the
XR35CX units, the devices must be added and ad-
dressed in E2.
1. Log in to the E2 with Level 4 access.
2. Press
-
Connected I/O Boards
and Controllers
.
3. In the
Num Network Ctrls: NetSetup
screen, under
the
ECT
tab, enter the number of devices in the
Quantity
field. (
Max
shows the maximum number
of devices allowed on the network.)
4. Press
to return to the
Network Setup
menu,
then select
-
Network Summary
.
5. Locate the units you added to the network list (press
and
to scroll through the list). If desired, en-
Figure 18-4
- Serial Communications Manager Screen
Figure 18-5
- Num Network Ctrls: NetSetup Screen
Содержание Dixell XR35CX - 110VAC
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