Echelon LNS DDE Server - Manual (Page 16)

[Pause]
Temporarily stops the LNS DDE Server from sending updates to
devices on the L
ON W ORKS network, both updates to network
variables and network variable polls. When paused, however, it
will still receive network variable update messages from
application devices and pass those to the client.
[Resume] Reenables polling and outgoing update messages.
1-8 LNS DDE Server Overview