Siemens C79458-L8001-A77 SIMATIC NET CP 5614 PROFIBUS Communication Card

Overview

SIEMENS SIMATIC NET

C79458-L8001-A77 SIMATIC NET CP 5614 PROFIBUS Communication Card

PROFIBUS DP master and slave communication for PC applications, with direct process-image access and a separate slave function.

At a Glance

Brand	Siemens
Model	C79458-L8001-A77
Product Type	CP 5614 communication card
Core Function	PC communication with PROFIBUS DP networks
Compatible Series / Application	Industrial PC and PROFIBUS DP systems

DP master

Connect certified PROFIBUS DP slaves to a PC application.

DP slave

Integrate the PC with a certified upstream DP master.

Software matching

Choose DP-Base or the licensed communication package required by the application.

Product Overview

C79458-L8001-A77 provides CP 5614 communication functions for PROFIBUS PC applications, combining DP master operation with a DP slave section.

The DP-Base interface gives applications access to process data, while optional DP, FMS and S7 software packages support their respective communication services.

Ordering focus: Match the installed CP 5614 hardware with the application interface, SIMATIC NET software version and required protocol licenses.

Key Functions

Master and slave integration

The DP master works with certified DP slaves, and the slave section can connect to certified DP master stations.

Process-image access

PC applications can read the process image at up to 3 Kbytes/ms and write at up to 8 Kbytes/ms.

Bus parameter adaptation

The DP slave section can adapt to the bus parameters of an existing attached PROFIBUS network.

Official Specifications

PROFIBUS transmission rates	9.6, 19.2, 45.45, 93.75, 187.5 and 500 kbit/s; 1.5, 3, 6 and 12 Mbit/s
DP slave capacity	Up to 124 slaves
DP data lengths per slave	Up to 244 bytes each for inputs, outputs and diagnostics
Concurrent DPC1 jobs	One read/write job per slave
Concurrent DPC2 connections	Up to 48 read/write connections
Process-image read performance	3 Kbytes/ms
Process-image write performance	8 Kbytes/ms
Average signal propagation	50 µs plus bus propagation time
Maximum slave signal propagation	100 µs plus bus propagation time
Parallel CP operation	Up to four CP 5613/CP 5614 modules
Parallel protocol operation	Up to two protocols

Official source:Siemens technical specifications and product manual

Frequently Asked Questions

Can I connect C79458-L8001-A77 to an existing PROFIBUS master?

The DP slave section can operate with certified DP masters and adapt to the attached network’s bus parameters.

How many field devices can I address from C79458-L8001-A77?

The DP master supports up to 124 DP slaves.

Do I need a separate license for DP-Base operation with C79458-L8001-A77?

DP operation through the DP-Base programming interface and purely FDL operation do not require a product license.

Which optional software needs licensing for C79458-L8001-A77?

The DP-5613, FMS-5613 and S7-5613 products require their respective licenses.

Can several applications use C79458-L8001-A77 in one PC?

Supported software versions allow several application programs to use the same CP simultaneously.

How much cyclic data can each slave exchange through C79458-L8001-A77?

Each slave can have up to 244 input bytes and 244 output bytes.

Can I run more than one protocol on C79458-L8001-A77?

A maximum of two communication protocols can operate simultaneously.

Compatibility & Ordering Notes

Before ordering C79458-L8001-A77: Select the CP 5614 card for the required DP master and slave roles, and match the host application to its communication software and licensing.

Compatibility Checklist for C79458-L8001-A77

• Retain the full C79458-L8001-A77 hardware identifier when ordering.
• Match the DP-Base, DP-Lib, FMS or S7 application interface before replacement.
• Allow for the 124-slave limit and the per-slave process-data lengths.
• Include the required software licenses in the order scope.

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