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Control unit FM355C, 4 chan.
SIMATIC S7-300, Control Unit FM 355 C, 4 channels, continuous, 4 AI+8 DI+4 AO incl. multi-language configuration package, Manual and Getting Started (de, de, fr, en fr, it) on CD-ROM

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FAQ Information about product-related environmental protection

Validity: Products of the Operating Company DI (Digital Industries) and Business Unit SI CP (Control Products) and Business Unit SI LP (Low Voltage Products) of Siemens AG.

ID: 39200038
FAQ SINAMICS S120, CU310-2 PN, CU320-2 PN: Maintenance request when allocating NameOfStation

Maintenance request when allocating NameOfStation. The MAINT LED of the CPU lights up yellow.

ID: 109478287
FAQ What are the operational limits and the basic errors of analog inputs and outputs?

The most important values for determining the accuracy of analog modules are explained.

ID: 26116994
FAQ Implementation of SIMATIC modules of the product families S7-300, S7-400, ET 200M, ET 200S ET, 200iSP and TDC in environments with high concentrations of corrosive gas

SIMATIC modules of the product families S7-300 S7-400 ET 200M ET 200S ET 200iSP TDC are also approved for implementation in environments with high concentrations of corrosive gas in compliance with ISA–S71.04 severity level G1; G2; G3. ...

ID: 28569857
FAQ What can you do if required modules are missing in the module catalog of the STEP 7 hardware configuration?

Description The instructions 'Updating the module catalog in the STEP 7 hardware configuration' show how you can add new modules and the latest module releases to the module catalog. ...

ID: 29594775
FAQ Which function modules (FM) can be used remotely in an ET 200M?

Configuration Notes This entry provides information about which function modules can be configured in an ET 200M remote IO system and which can then be operated remotely. ...

ID: 21536617
FAQ What is a hardware interrupt and how do they work in the S7-300 system?

Instructions: Events can occur in the current process which require responses which are quicker than are possible in the current program cycle. Events also occur which do not last long enough to be identified in the current program cycle. Therefore, there is hardware interrupt processing in SIMATIC S7-300 controllers. ...

ID: 23657941
FAQ How can you improve the accuracy of thermocouple measurements?

Description: If you connect thermocouples directly to the module, the reference point temperature is only captured at one point in the analog module. Due to a certain temperature gradient at the front connector, the temperatures measured are not always exactly identical. ...

ID: 33912228
FAQ Which measures are necessary to operate the analog inputs of the FM355 and FM355-2 without errors?

To operate the analog inputs of the FM355 (6ES7355-0VH10-0AE0, 6ES7355-1VH10-0AE0) and FM355-2 (6ES7355-2CH00-0AE0, 6ES7355-2SH00-0AE0) without errors, certain conditions have to be met.  ...

ID: 30330541
FAQ What should you pay attention to when the ramp function of FM 355-2 is switched on?

Instructions: FM 355-2 provides two ways of limiting the speed of a setpoint change:  Ramp switched on ( > 0.0s)  Factor setpoint value change PFAC_SP < 1.0 ...

ID: 28688097
FAQ What is the function of the SDB_SEL parameter of the FB PID_FM?

Instructions: From Configuration Package V6.0 onwards for the FM355/455, there is a new parameter, 'SDB_SEL', on the FB31 (PID_FM) block. If you set this parameter, it prevents the control parameters from being overwritten each time the CPU starts up. In this way, the control parameter last captured is retained. ...

ID: 28542682
FAQ Why, after loading the configuration, is the position detection module SM338 parameterized, but no longer works?

Description:   If a configured SM338 (6ES7 338-4BC01-0AB0/ E-status E 01) with Firmware version V1.0.0 is loaded with the configuration from the Programming device (PG) with unmodified parameters of the SM338, the parametrized channels of the SM338 still remain parametrized, however they are not operational.   ...

ID: 16649894
FAQ What should you watch out for with a fuzzy closed-loop control with the FM 355 / FM 455?

Instructions: You should watch out for the following: 1. Identifying a process to be controlled...

ID: 768057
FAQ How can I prevent the FM 355C from overshooting when switching from safety mode to "control mode"?

Instructions: Switching from safety mode to 'control mode' of the FM 355C is bumpless and thus leads to overshooting. ...

ID: 875859
FAQ FM355: What should you watch out for when the external control output is switched on via a digital input on the FM355C/S?

Description: In order for the external control output LMN_RE to be transferred to the module and for it to be updated at the output LMN on the PID_FM block, the transmission parameter LOAD_OP = True must be set. ...

ID: 22604508
FAQ FM355 / FM355-2 / FM455: Type L thermocouple (iron/copper-nickel)

QUESTION:   Can I also connect Type L thermocouples to FM355 / FM355-2 / FM455? ...

ID: 20412875
FAQ FM 355: implementation in SIMATIC PCS 7

QUESTION:   What should you watch out for when implementing FM 355 or FM 355-2 in SIMATIC PCs 7? ...

ID: 19140374
FAQ Ground connection with encoder emulation on an FM

QUESTION: How do I make a ground connection on FM and power section in the case of encoder emulation? ...

ID: 18217308

QUESTION: Where can I get technical information about the network filters for FM-STEPDRIVE/SIMOSTEP? ...

ID: 12281504
FAQ Rated value configuration of the FM355C

QUESTION: How can I configure the rated value in the FM355C so that I can change this value from the configuration program or as operator? ...

ID: 2303591
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