Siemens ST PCS 7 manual Modules with Hart, 11/23, Parameterization

© Siemens AG 2007

Process I/O

ET 200M distributed I/O

Modules with HART

■Overview ■Function

The modules with HART (High- way Addressable Remote Transducer) which can be used in ET 200M remote I/O stations (with IM 153-2 High Feature interface module) per- mit connection of HART de-

vices to SIMATIC PCS 7 automation systems.

All transmitters or HART actuators certified for digital communi- cation using the HART protocol can be connected via these modules.

Conventional transmitters with 4 to 20 mA technology without HART protocol can also be connected.

All modules with HART come with diagnostics capability (chan- nel and module diagnostics). The diagnostics and monitoring functions are directly available in SIMATIC PCS 7. They require no additional engineering. Plain text messages output on the op- erator station provide information on faults or changes in the HART parameter settings.

Homogenous integration in the SIMATIC Process Device Man- ager (PDM) and the PCS 7 Asset Management permit intuitive online diagnostics and parameterization of all connected field devices from a central position.

HART is a serial transmission procedure with which additional parameter data such as measuring ranges, attenuation etc. can be sent to transmitters and actuators over a 4 to 20-mA current loop. The HART jobs for each channel can be remotely initiated over the PROFIBUS DP. This usually takes place from the central engineering system of the SIMATIC PCS 7 process control sys- tem per SIMATIC PDM.

The modules with HART have the following features:

•Connections compatible with the conventional analog mod- ules of the ET 200M

•Additional communications possibility over the current loop

•8 analog channels per module (2 analog channels with Ex modules)

•Each channel is a primary master of the HART protocol

•Selectable input range per channel (AI):

-0 to 20 mA (without HART function)

-± 20 mA (without HART function, not with Ex module)

-4 to 20 mA (with/without HART function)

•Selectable output range per channel (AO):

-0 to 20 mA (with/without HART function; in the case of Ex module, only without HART function)

-4 to 20 mA (with/without HART function)

Additional functions of the HART analog modules 6ES7 331-7TF01-0AB0 and 6ES7 332-8TF01-0AB0:

•Supplementary HART variables (up to 4 per channel, up to 8 per module) allow the transmission of additional values from/to the HART devices

•Modules can be operated in redundant mode (module and channel redundancy)

Parameterization
• For the analog input modules (AI), it is possible to parameter-
ize e.g. conversion time, input range, limits, alarms, smooth-
ing of measured values
• For the analog output modules (AO), it is possible to parame-
terize e.g. output range, response on stoppage of AS (CPU),
diagnostics
• Remote parameterization (per PROFIBUS DP) of the HART	11
transmitters and actuators with SIMATIC PDM

•It is still possible to parameterize the HART devices using an operator terminal (handheld).

Siemens ST PCS 7 · November 2007

11/23