SYNCH Control Guidelines
SenixVIEW sensor configuration software allows up to 32 sensors to be synchronized in a master-slave network. In SenixVIEW, SYNCH mode is useful to prevent sensor interference from sensors located close to one another by alternating sensor measurement cycles. It is also useful to acquire simultaneous measurements over an area using a grid of sensors by causing all sensors to measure at the same time. In the latter case, greater precision can be obtained by using a higher baud rate than the default 9600 Baud. Baud refers to the communication data rate.
In SYNCH, there can be up to 31 slaves organized in up to five phases with any number of sensors in each phase. There can only be ONE MASTER to a SYNCH group and it measures on phase one. The more phases in play, the slower the overall measurement function since the master has to instruct all phases in succession. The Interval value determines the rate at which the master controls the phases.
- Every sensor in the SYNCH network must have its own network address within the range of 1-247 inclusive
- All sensors must use the same BAUD rate
- The SYNCH network operates on RS-485 communication protocol
- All sensors in an RS-485 network have their yellow and gray wires connected (bussed)
- All sensors must share a common ground (blue) wire
Sensors configured for RS-232 protocol can be used in a SYNCH network, however their configuration is switched to RS-485 during setup. RS-485 supports multi-addressable networking, while RS-232 does not. Once a RS-232 sensor is configured as a SYNCH master or slave, RS-485 communication equipment must be used to connect to it individually through SenixVIEW. Therefore, RS-485 sensors are recommended to start with. A modified sensor with a pushbutton can be returned to its RS-232 configuration by use of the pushbutton and the TEACH 15 command.
Step-by-step instructions for using the SYNCH feature in a network.