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CC-Link IE Safety Communication Function

Integrating safety communication on one network
A safety communication function realized on each network of CC-Link IE. CC-Link IE enables both safety and non-safety communications on the same network.

CC-Link IE Safety Communication Function Features

A safety communication function realized on each network of CC-Link IE

  • With the high-speed of each CC-Link IE network, a safety system with high responsibility can be constructed.

Achieves a mixture of safety control in general control and motion control

  • Safety control system can be introduced into general control and motion control system.

Based on an international standard of the safe communication

  • CC-Link IE safety communication satisfies the requirements necessary for SIL3 compliance, which are indicated in IEC 61508.

Safe control and general control can be mixed

The CC-Link IE system that implements safety communication comprises CC-Link IE stations (IE safety stations) equipped with safety communication functions and CC-Link IE stations (IE standard stations) not equipped with safety communication functions. Fig. 1 shows an example of a configuration.

Fig. 1 CC-Link IE Configuration Example

Fig. 1 CC-Link IE Configuration Example

*A specification that can also support CC-Link IE Controller Network and CC-Link IE Field Network.

Compatible standards

Table 1 shows the international safety standards corresponding to CC-Link IE safety communication function. CC-Link safety communication function satisfies the requirements necessary for SIL3 compliance, which are indicated in IEC 61508. In addition, CC-Link IE safety communication function follows the basic concept of functional safety communication defined in IEC 61784-3.

Table 1 Corresponding International Safety Standards

Standard No. Name Safety Level
IEC61508:2010 Functional safety standards for electrical/electronic/programmable electronic safety-related systems SIL3
IEC61784-3:2010, 2016, 2017, 2021 Industrial communication networks – Profiles – Part 3: Functional safety fieldbuses -

Safety station internal

A safety stations connected to CC-Link IE Safety has IE safety communication layer. IE safety communication layer has one or more IESMAP (Manager) and/or one or more IESSLP (Slave). IESMAP is a protocol machine establishing a safety connection with the IESSLP specified as its safety parameter and performing safety communication with the IESSLP. IESMAP always invokes a safety connection establishing process.
IESSLP is a protocol machine establishing a safety connection with the IESMAP sending a connection request from, and performing safety communication with the IESMAP.

IESMAP (IE Safety Manager Protocol Machine)

Protocol machine establishing a safety connection with the IESSLP specified as its safety parameter after sending a connection request to the IESSLP; receiving a response from it; and confirming its identification, and performing safety communication with the IESSLP

IESSLP (IE Safety Slave Protocol Machine)

Protocol machine establishing a safety connection with the IESMAP sending a connection request from, and performing safety communication with the IESMAP

Specification

Item Specification
Communication method Connection type
Max number of stations Dependent on CC-Link IE that serves as foundation:
CC-Link IE TSN: 64770
CC-Link IE Controller Network: 120
CC-Link IE Field Network: 254
Max number of safety connection for same stations 2
Max number of links of safety refresh Input: 4-100 octets / Output: 4-100 octets
Safety Integrity Level (IEC61508) SIL3

Click here to see more on CC-Link IE TSN

Click here to see more on CC-Link IE Controller Network

Click here to see more on CC-Link IE Field Network

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