Configuration and operation
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For more information see document:
4.11 SNMP protocol
4.11.1 Basics
The protocol is based on the Client / Server architecture, where clients are called
managers
and servers are
called
agents
.
Managers can read (GET) and write (SET) agent parameters. Agents can send messages (
traps
) to manag-
ers about changes in any parameter.
Each agent parameter has a unique identifier (OID - object identifier), which is a sequence of numbers sepa-
rated by periods.
4.11.2 Implementation
The module supports SNMP protocol (SNMPv1 and SNMPv2c versions) and can be used as agent with GET
and SET requests.
All module parameters are available via SNMP protocol. The list of parameters is given in App. D.
NOTE
When using the SNMP protocol without GET requests, it is recommended to set the pa-
rameter "Safe state timeout" (“Modbus Slave” group) to 0, since writing is usually event-
driven and not cyclic in this case.
Table 4.11. SNMP parameters
Parameter
Description
Range
Default
value
Access
Enable
Enable SNMP connection
On
/
Off
Off
RW
Read community
Password for read access
-
public
RW
Write community
Password for write access
-
private
RW
Trap IP address
IP address to which the trap will be sent in case
of changing the mask of the digital inputs (mod-
ules with digital inputs only)
-
10.2.4.78
RW
Trap port
Port number to which the trap will be sent
0…65535
162
RW
SNMP version
Protocol version
SNMPv1
/
SNMPv2
SNMPv1
RW
For more information see document:
4.12 Password
You can use password to protect the configuration parameters of the device from an unauthorized access.
To set the password, use the toolbar item
Password
or the same item in the device context menu. There
is no password by default.
If you forgot the password, restore the factory settings (Sect. 6).
