HARDWARE CONFIGURATION AND ASSEMBLY
4.1 Configuring the Hardware in SIMATIC
SIWAREX FTC is a function module (FM) in the SIMATIC S7 300 automation
system. It can be installed in any position designated for function modules.
Utilization with the SIMATIC S7 300 is possible in central operation, in an
expansion device or decentralized in the ET 200M system.
Operation with the SIMATIC S7 400 is only possible decentralized in the ET 200M
system. In this case, the active back-plane bus can be used.
In estimating the maximum number of SIWAREX FTC's that can be integrated
within one system, the following information may be helpful.
Total width Current requirements
(5V) from SIMATIC back-
plane bus
RAM requirements in
SIMATIC CPU
n x 80 mm n x 50 mA 4100 Bytes + n x 1200
Bytes
Table 4-1 Requirements for n SIWAREX FTC modules
Max. amount in central operation – 8 SIWAREX FTC
Max. amount with multi-line expansion – 8 SIWAREX FTC per line
Max. amount in system ET 200M – 7 SIWAREX FTC per station
Selecting the suitable SIMATIC CPU, the SIMATIC HMI (Human Machine
Interface) and the communication modules does not only depend on
SIWAREX FTC requirements but also on the overall job that the automation
system has to perform.
4.2 Structure to EMC Guidelines
SIWAREX FTC is a highly accurate measuring device that has to dependably
measure the slightest signal. Proper assembly and wiring are therefore absolutely
essential for fault-free operation.
4.2.1 Definition: EMC
EMC (Ele
ctromagnetic Compatibility) describes the ability of an electrical device to
function without faults in a defined electromagnetic environment without being
influenced by its surroundings and without negatively influencing the surroundings.
4.2.2 Introduction
Although SIWAREX FTC was devel
oped for use in industrial environments and
meets high EMC specifications, you should carry out EMC planning before
installing your controller to determine and take into account any possible
interference sources.
SIWAREX FTC
4-11
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