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Working out how many data loggers you require for a given installation is relatively simple.
SA380TX Hardware Variants
The SA380TX -L Hardware Variants | |||||||||||||||||||||
Configuration | Analogue Inputs | Digital Inputs |
Configuration | Analogue Inputs | Digital Inputs |
|---|---|---|
Base Unit (No Cards) | 2 | 4 |
Base Unit + 1 Digital Card | 2 | 12 |
Base Unit + 2 Digital Cards | 2 | 20 |
Base Unit + 1 Analogue Cards | 6 | 4 |
Base Unit + 2 Analogue Cards | 10 | 4 |
Base Unit + 1 Analogue Card + 1 Digital Card | 6 | 12 |
Master / Slave Devices
As stand-alone devices, each data logger will require an active SIM and GSM antenna in order to transmit data to the RADAR system. This can become troublesome for large installations installed in tight spaces.
Using a “Master / Slave” arrangement permits up to 7 SA380TX-L devices to connected over RS485.
All data is marshalled through the master SA380TX device. Consequently all configuration, data collection and transmission, is controlled from the master SA380TX. In theory the maximum number analogue channels become 78, and digital channels becomes 166.
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The RS485 link can become overloaded when used for point monitoring if all the monitored point ends move concurrently. Mpec recommend the following limitations:
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