Behavior of the TM3 Transmitter and Receiver Modules
The following exceptional behaviors can occur with TM3 transmitter and receiver modules:
oTransmitter/receiver cable disconnected or broken during operation
oRemoving receiver module power during operation
oReceiver module disconnected during startup
oReceiver module powered on after the controller
The TM3 modules before the transmitter module are called "Local", and those after the receiver module are called "Remote".
The I/O that may be embedded in your controller is independent of the I/O that you may have added in the form of I/O expansion. It is important that the logical I/O configuration within your program matches the physical I/O configuration of your installation. If you add or remove any physical I/O to or from the I/O expansion bus or, depending on the controller reference, to or from the controller (in the form of cartridges), then you must update your application configuration. This is also true for any field bus devices you may have in your installation. Otherwise, there is the potential that the expansion bus or field bus no longer function while the embedded I/O that may be present in your controller continues to operate.
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UNINTENDED EQUIPMENT OPERATION |
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Update the configuration of your program each time you add or delete any type of I/O expansions on your I/O bus, or you add or delete any devices on your field bus. |
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Failure to follow these instructions can result in death, serious injury, or equipment damage. |
Transmitter/Receiver Cable Disconnected or Broken During Operation
The controller continuously retries to access the modules attached to the receiver module.
When the receiver module detects cable disconnection:
oAll local modules continue operating.
oAll remote modules are put into the Reset state.
oI/O LED is on, and TM3 status bit (plc_r.i_lwSystemFault_1.1) is set to 0.
oDiagnostic information for the remote modules is available in the TM3_MODULE_R array.
oIn EcoStruxure Machine Expert a red sign appears in front of the TM3 module with detected errors.
Reconnecting the cable does not restore normal operation. Only a controller power cycle or reset restores normal operation after disconnecting and then reconnecting the cable.
Removing Receiver Module Power During Operation
When the receiver module detects cable disconnection:
oAll local modules continue operating.
oI/O LED is on, and TM3 status bit (plc_r.i_lwSystemFault_1.1) is set to 0.
oDiagnostic information for the remote modules is available in the TM3_MODULE_R array.
oIn EcoStruxure Machine Expert a red sign appears in front of the TM3 module with detected errors.
Restoring power results in the TM3 modules attached to the receiver module assuming a Reset state. Only a controller power cycle or reset restores normal operation.
Receiver Module Disconnected During Start-up
If the receiver module was not connected at controller start-up, nothing happens because the TM3 bus is not started.
Receiver Module Powered on After the Controller
If two separate power supplies are used for the receiver module and the controller, the power supply of the receiver module must be switched on before the controller power supply. The TM3 bus does not start if the correct order of power application is not respected, and all modules are in Reset state (all outputs are forced to 0).
If the receiver module and the controller are supplied by the same power supply, the whole configuration starts operating.
If only the receiver module is powered (controller not supplied):
oThe TM3 modules after the receiver module are in Reset state (all outputs are forced to 0).
oThe TM3XFHSC202 / TM3XHSC202 and TM3XFHSC202G / TM3XHSC202G modules after the receiver module are in Fallback mode (all outputs forced to the configured values).
