Instruction Manual

Logic Functions - Book 1

4-1

4.1

Communication module blocks define a physical interface port and are not part of a loop scan

group. The ICN and MSC communication module blocks are available outside of loop

compounds only and are placed somewhere at the instrument level. One of these modules is

required to talk to other devices on the network. Configuration activities such as download a

database, import a database or general activities for reading and writing instrument status

information all passes through a communication module.

Communication modules are selected from the instrument level Communication Library. The

Communications module types are:

Instrument Communication Network Module. This block links configured lists,

input and output communications blocks, notification message blocks and

supervisory message blocks to other devices on the ICN through the ICN

module. The 2030N ICN Communication module can be located in the

following slot pairs (ICN numbers based upon assigned occurrence in .CRF

file).

31-32;

28-29, 29-30;

25-26, 26-27, 27-28

Modcell Serial Communication Module. This block links Modbus lists to

Modbus devices through an RS232 or RS485 module. The MSC module can

be located in the following slots.

For the 2033N RS232 and the 2034N RS485 Communication modules, which require

two slots:

31-32;

28-29, 29-30;

25-26, 26-27, 27-28

For the 2032N RS485 Communication module, which requires one slot:

32;

29, 30;

26, 27, 28