Eaton easyE4 User Manual

5. Programming on the device
5.4 Working with contacts and coils
SN-RN combination for bit exchange on the NET
l
Writing via SN
The NET operand SN (Send NET) is used for sending bit data from one NET station to
another. To do this you select the SN operand in a coil field.
l
Reading using RN
The RN (Receive NET) NET operand is used to receive the bit data that another NET
station has sent. To do this you select the RN operand in a contact field.
As the RN and SN must always be used in pairs, the following rule applies:
l
on the sending station and receiving station use the same operand number for
each SN/RN pair to be formed.
l
in the circuit diagram of the sending station you set for the SN operand (coil) the
station number (NET ID) of the receiving station.
l
in the circuit diagram of the receiving station you set for the RN operand (con-
tact) the station number (NET ID) of the sending station.
SN-RN example
NET station 2 sends the status of the P button P01 via SN1 to NET station 1.
2 slave 
1 slave
Destination
Id


Source
ID

1
SN 2
RN
The relevant circuit diagram is as follows:
On NET station 1 the status of P1 is associated via RN01 as a count pulse for the
counter relay C01.
easyE402/24 MN050009ENEaton.com
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Eaton easyE4 Specifications

General

Brand	Eaton
Model	easyE4
Category	Relays
Language	English