Reply Telegram Generator
Park Signalling's Reply Telegram Generator is an aid for testing that simulates TFMs on a data link. It creates SSI reply telegrams in response to SSI command telegrams and is intended for testing and training purposes only.
Reply Telegram Generator (DLM version)
The unit will reply to any of command telegrams 1 to 63 with data and status bit values defined by the user. Additionally, replies can partially simulate Points Modules by automatically setting the points detection bits in the reply telegram in accordance with the points call bits in the command telegram.
A simple PC application allows the user to select which reply telegrams are to be generated, and the state of their data and status bits. The configuration is then downloaded to the unit via a USB link, where it is stored in non-volatile memory. To change the configuration, the unit can be stopped and reprogrammed at any time.
Two versions are available: one for connection in series with an LDT, the other for connection in series with a DLM. The Reply Telegram Generator uses one of the data link's current loop interfaces for the reception and transmission of telegrams. All other connections to the LDT or DLM pass directly through the unit. The unit is powered by the LDT or DLM.
RTG Configuration screen