Functions of the TBX SAP 10 module
(Original Document)
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At a Glance
The M2 profile of the TBX SAP 10 (AS-i master) enables:
As for any device connected to the Fipio network, this device has diagnostics information. The TBX SAP 10 is equipped with a display panel allowing diagnostics information to be sent concerning its state and that of the AS-i bus.
Reading Inputs
With a maximum of 31 slaves on the AS-i bus, the TBX SAP 10 can send the state of 124 discrete inputs to the PLC.
The information is sent cyclically over the Fipio network to the PLC. A validity indicator for AS-i bus input information can also be used in the PLC program; it indicates whether the TBX SAP 10 is ready to function or not.
Writing Outputs
With a maximum of 31 slaves on the AS-i bus, the TBX SAP 10 can write 124 discrete outputs on the AS-i bus.
The information is transferred cyclically over the Fipio network toward the TBX SAP 10.
NOTE: slave outputs are written before inputs are read.
Comparison of the Configuration
Independent of the operating mode that the TBX SAP 10 may be in, the module continuously compares the current AS-i bus configuration with that of the reference configuration.
If an inconsistency should occur, it signals a configuration fault to the PLC.
This reference configuration is obtained either through configuration in Control Expert or by saving the actual configuration of the AS-i bus at a given time.
Changing Mode
It is not possible to change from configuration mode to protected mode if a slave with the address 0 is present on the AS-i bus.
Switching from configuration mode to protected mode triggers the-complete initialization of the TBX SAP 10 which lasts approximately 1 second, and causes all the AS-i bus inputs/outputs to be set to 0.
Setting Up Slave Parameters
Parameters can be set up for certain AS-i slaves (limit switch detectors, photo-electric cells). The adjustment parameters for each slave can be alarms, test signals, time out triggers, and ranges.
The TBX SAP 10 module enables the value of each of these parameters to be modified during operation, in order to adapt to changes in the installation. It detects the values modified by the PLC and sends the new values to the slaves in question.
Changing a Faulty Slave
When the TBX SAP 10 operates in Protected mode, it is possible to use the auto-addressing function when a single slave is defective on the AS-i bus.
When the operator intervenes to change the faulty slave (the factory settings for a slave always specify the address 0), the master will detect this new device with the address 0, and if its identification corresponds to that of the projected device, the master will automatically assign it a new address, which is that of the defective device.
The advantage of this is that a failure can be located rapidly and the installation can be worked on without the need for specific devices.
If several slaves are defective, the master cannot automatically assign the address to the new device. The address of each slave will have to be programmed with the drum controller before connecting them to the AS-i bus.
Diagnostics Information
The TBX SAP 10 can send diagnostics information about its state and that of the AS-i bus on a cyclic basis.
This information can be used in the PLC program in order to correctly manage the inputs/outputs.
The display panel of the TBX SAP 10 has: