USER MANUAL
TCM 410J
–
Transceiver Module
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TCM 410J User Manual | v2.3 | June 2022 | Page 18 / 46
3.1
Operational modes
TCM 410J provides the following functional modes for security processing:
◼
Teach-in mode (inbound / outbound)
This mode is used to setup the parameters required for the security processing
◼
Operational mode
This is the normal operation mode where secure telegrams are processed according to the
parameters that are setup in teach-in mode
For inbound (reception) and outbound (transmission) communication, TCM 410J is main-
taining a secure link table with individual entries containing the required parameters for se-
cure communication with one specific remote device. Each such entry contains information
on the security key, the rolling code (RLC) and the Security Level Format (SLF) to be used
for communication with the remote device.
The secure link table is managed using the following commands:
◼
CO_WR_SECUREDEVICE_ADD
◼
CO_WR_SECUREDEVICE_DEL
◼
CO_RD_SECUREDEVICE_BY_INDEX
◼
CO_RD_NUMSECUREDEVICES
◼
CO_RD_SECUREDEVICE_BY_ID
The direction (inbound / outbound) must be specified.
The entries in the inbound table (used for the processing of received messages) can be ref-
erenced by one of the following two options:
◼
Table index (entry number)
◼
Device ID (EURID) of the device from which the message is received
The entries in the outbound table (used for the processing of transmitted messages) can be
referenced by one of the following options:
◼
Table index (entry number)
◼
Device ID (EURID) of the device to which the message is transmitted (for the case of
an addressed message)
◼
Device ID (EURID) or Base ID of the TCM 410J module that is transmitting the mes-
sage for the case of a broadcast (non-addressed) transmission
Please select the correct ID based on your use case when adding devices to the outbound
table with the serial command CO_WR_SECUREDEVICE_ADD.
When using command CO_RD_SECUREDEVICE_BY_INDEX then please notice that the in-
bound and the outbound table use separate indexes which both start at 0.
