IFM AL1340 - Device Configuration and Data Access

IO-Link Master with Modbus TCP Interface DataLine 4 Ports IP 65 / IP 66 / IP 67
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9.2.7 Configure IO-Link devices
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The ifm IoT Core supports the configuration of the connected IO-Link devices. A parameter is
accessed via IO-Link index and subindex (→ IO Device Description (IODD) of the device).
Substructure: iolinkmaster/port[n]/iolinkdevice (n = 1...4)
Applicable services:
Service
Description
../iolreadacyclic
Read a parameter of an IO-Link device (acyclic)
../iolwriteacyclic
Write a parameter of an IO-Link device (acyclic)
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Example: Read the parameter value of an IO-Link device
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Task: Read the serial number of the ifm temperature sensor TN2531 at IO-Link port X02
Solution: Read the serial number with the iolreadacyclic service from the IO-Link device (index:
21, subindex: 0)
 Request:
{
"code":"request",
"cid":4711,
"adr":"/iolinkmaster/port[2]/iolinkdevice/iolreadacyclic",
"data":{"index":21,"subindex":0}
}
 Return:
{
"cid":4711,
"data":{"value":"4730323134323830373130"},
"code":200
}
The returned value is given in hexadecimal format. The conversion of the HEX value in a STRING
value is: G0214280710