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Connect the MODBUS network cable to the
three-terminal connector on the COM port you wish
to assign as MODBUS. Wire RS485+ to the RLDS+
RS485- to the RLDS- and the shield cable to the
RLDS GND.
4.1.1.3. E2 Termination
For E2 versions 3.xx and below, if the E2 will be the
first device in the daisy-chain, set the port's
termination jumpers to the TERMINATED &
BIASED
position (all three jumpers UP); otherwise, set all
jumpers DOWN if not the first device.
For E2 versions 4.0 and above, if the E2 is the
beginning of all RS485 I/O or MODBUS Networks,
all three of these jumpers should be set to the UP
position. For MODBUS, the jumpers should all be in
the top-most position (MOD). For I/O Net, the
jumpers should be in the middle position (I/O). For no
termination, set the jumpers to the down position
(NO).
4.1.2. E2 Setup of RLDS
4.1.2.1. Set Up Network Ports
Before setting up a RLDS, 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
Controller Info.
to open the Serial tab of the
3. Press
+
General Controller Info setup screens:
14 • RLDS I&O Manual
- General
Figure 4-3 - Serial Communications Manager Screen
4. This screen will have a "Connection" field for
all COM ports on the E2. Highlight the COM
port connection field that will be used, and
- LOOK UP. From the list of
press
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 19200. Leave this
field at the default value.
• Data Size - Leave this field at the default
value (8).
• Parity - Leave this field at the default value
(None).
• Stop Bits - RLDS value is one (1).
6. Press
to save changes and exit.
4.1.2.2. Add and Connect RLDS
To enable communications between E2 and the
RLDS, the devices must be added and addressed in
E2.
1. Log in to the E2 with Level 4 access.
2. Press
- Connected I/O Boards
026-1309 Rev 8
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