Operating Instructions
Transponder-Coded Safety Switch CTM-I2-BP/BR
24
(translation of the original operating instructions) MAN20001437-01-10/21
12. Using communication data
A BR/IO-Link Gateway is required to use the device’s communication data and forward them to a higher-level bus system.
The following devices are suitable:
Ì
GWY-CB-1-BR-IO (BR/IO-Link Gateway)
Ì
ESM-CB (safety relay with integrated BR/IO-Link Gateway)
12.1. Connection to a BR/IO-Link Gateway GWY-CB
The Gateway is an IO-Link device. Communication via IO-Link offers cyclical (process data) and acyclical (device data and
events) data exchange (see chapter
12.3. Overview of the communication data on page 24)
.
The communication connection C on the device allows the diagnostic line to be connected to the Gateway. The Ox/C con-
nection represents a non-safety-related communication channel between the Gateway and the connected devices.
IO-Link communication can be used for the following functions as well:
Ì
Reset for acknowledging error messages
You will find further information in the operating instructions for your BR/IO-Link Gateway.
12.2. Connection to a safety relay ESM-CB
The safety relay ESM-CB features an integrated BR/IO-Link Gateway. In addition to functioning as an IO-Link device (see
chapter
12.1. Connection to a BR/IO-Link Gateway GWY-CB on page 24)
, the device can be used for connecting two
monitored single- or dual-channel sensor circuits. The sensor circuits evaluate various signaling devices:
Ì
Sensor circuit S1 with short circuit detection; suitable for single- or dual-channel safety sensors
Ì
Sensor circuit S2, suitable for OSSD signals; short circuit detection by signaling device
When at least one sensor circuit is interrupted, the safety relay initiates the safe state. Different relay starting behaviors and
various monitoring functions are possible.
The device’s safety outputs FO1A and FO1B are routed to the OSSD inputs of the safety relay. The OD/C connection of the
device allows the diagnostic line to be connected to the Gateway.
You will find further information in the operating instructions for your safety relay with integrated BR/IO-Link Gateway.
12.3. Overview of the communication data
The switch transmits both process data that are continuously transmitted to the evaluation unit (cyclical data) and data that
can be polled specifically as needed (acyclical data). For further information on connection and on the communication data,
refer to the operating instructions for your BR/IO-Link Gateway.
12.3.1. Cyclical data (process data)
Table 2: Cyclical data (process data)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Byte 1
OI
OM
OD
Byte 2
OLS
OL
Table 3: Status and control data
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Byte 1
-
-
-
-
-
-
-
CL
Bit
Signal
Message
OI
Diagnostics
There is a fault, see chapter
15.3. Error messages on page 30.
OM
Status
The safety outputs of the device are switched.
OD
Door position
A valid actuator is detected in the actuating range, and the guard is closed.
OLS
Locking element
The locking element is stuck, see chapter
15.3. Error messages on page 30.
OL
Guard locking
Guard locking is active.
CL
Control of guard locking
Guard locking is controlled via IO-Link communication, see chapter
