User`s manual

ioLogik R2140 User’s Manual Cascading with Other I/O Servers
Introduction
The ioLogik R2140 can serve as an extension module to provide additional I/O channels to an
ioLogik E2210 or E2240 Ethernet I/O server. Up to 31 units can be chained or cascaded together
using each unit’s built-in connectors.
Cascading System Bus
The I/O servers connect to each other over the cascading system bus, which uses RS-485 and
Modbus protocols. Pin assignments for the female system bus connector are shown below. This is
the connector that protrudes from the right side of the unit.
Pin Signals Pin Signals
1 V+ (24V) 2 V-
3 V+ (24V) 4 V-
5 N.C. 6 N.C.
7 Date+ 8 SYNC
9 Date- 10 GND
Hardware Installation
To install the ioLogik R2140 as an extension module, simply snap it into place alongside the ioLogik
E2000 and the two units will lock together. Press the release button to detach the unit.
Power is provided through the ioLogik E2000’s system bus. Depending on the power requirements
of your application, external power can also be supplied to the unit through the unit’s power
terminals.
Using ioAdmin with Cascaded I/O Servers
Adding One I/O Server
ioAdmin can be used to access the I/O channels of all cascaded I/O servers. In the following
instructions, the ioLogik E2210 and R2110 are used as examples:
1. Verify that the E2210 has been installed and has been opened in ioAdmin. Snap the E2210 and
R2110 together. Set the unit ID for the R2110 (“2” in this example).
4-2