10. easyE4 communication Connection to other devices
10.12 Setting up a NET group
10.12.2 Communication via NET
A NET group can be made up of up to eight easyE4 base devices.
Within the group, the easyE4 base devices can communicate with each other.
If, however, you want devices to be able to communicate across groups, you will
need to use a coordinator device that controls the corresponding communication
with Modbus TCP.
A total of ten NET groups (groups 1 through 10) can be run on a single Ethernet net-
work at one time. This is the equivalent of a maximum of 80 easyE4 base devices that
can communicate with each other.
The following list shows the operands that can be used within a group by every
device:
l
(n = NET-ID 1 .. 8)
l
n SN 01 - 32 [bit]
l
n RN 01 - 32 [bit]
l
PT 01 - 32 (PUT) [double word]
l
GT 01 – 32 (GET) double word]
l
n N 01 - 512[ Bit]
l
n NB 01 - 64 [byte]
l
n NW 01 - 32 [byte]
l
n ND 01 - 16 [double word]
l
Synchronize clock (settings)
Examples
Station 1 sending a bit to station 2
NET-ID1
NET-ID 2
2 SN 15
→
1 RN 015
Station 3 sending a double word to station 8 via PT16
NET-ID1
NET-ID 2
PT16
→
GT 01
Parameter
NET-ID 1
PT 16
Station 4 sending a network marker [bit and word] to all stations.
NET-ID4
NET-ID 2
NET-ID 5
NET-ID 7
N 125
→
4 N 125
4 N 125
4 N 125
NW30
→
4 NW 30
4 NW 30
4 NW 30
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