Bangkok Blue Line Extension Project, Contract 2 – Thailand

Bangkok Blue Line Extension Project, Contract 2 – Thailand

The MRT (Metropolitan Rapid Transit) Blue Line is being extended.The extension is expected to be completed in 2017 and by then the Blue Line will become a loop line around the centre of Bangkok, with the part on the western side of the Chao Praya River mainly being an elevated system and the other half […]

Arosa Schafisgade project – new touristic resort – Switzerland

The Arosa Schafisgade project includes construction of three houses with each six luxury apartments. The houses are located in a potential unstable slope. During excavation work adjacent houses above the new built ones had to be monitored geodetically. Between the new excavation and the existing houses borehole inclinometers had been drilled and monitored to detect […]

FAQ#116 – How do I configure a WR-Log digital node to read RS485 Sisgeo TIMED sensors?

Sisgeo digital instruments can operate in two powering modes: TIMED or ALWAYS-ON (for more information see F.A.Q.#094.A string of mixed instruments consisting of TIMED gauges and ALWAYS-ON gauges cannot work.The first thing to do is therefore to check that ALL connected instruments in your array are set to TIMED mode.You can check the powering mode […]

FAQ#076 – Pourquoi est-il nécessaire d’ajouter une résistance de terminaison au dernier capteur numérique de chaque chaîne RS-485?

Tous les instruments numériques SISGEO (IPI, clinomètres, H-Level…) utilisent le protocole de communication série RS-485. Le protocole RS485 requiert l’ajout d’une résistance de terminaison. La connexion recommandée pour une chaîne utilise des nœuds « point à point » (multidropped) en mode bus (line). Les connexions réseau en étoile, circulaires ou ramifiées ne sont pas recommandées. […]

FAQ#073 – Quel est le nombre maximal de capteurs numériques (RS-485, Modbus), le nombre maximal de chaînes et la longueur maximale du câble dans un réseau RS-485?

Last update: October 2021 All the SISGEO digitized sensors utilize a RS485 interface with Modbus protocol. 1.The maximum number of digitized sensors in a RS-485 network are 247 (theoretical) 2.The maximum number of digitized sensors chains that is possible to connect to Modbus master unit (as OMNIAlog or miniOMNIAlog) are 4. 3. About the maximum […]