FPΣ (Sigma)
Optimised communication functions
With the RS485 type communication cassette...
Four types of communication cassettes enable:
efficient connection to serial devices
transmission speeds of up to 115.2kbits/s
long transmission distance of up to 1200m
In addition, the green screw terminal is removable for easy wiring.
Despite being compact you can create powerful PLC links!
More links than you imagined a compact PLC could achieve (2,048 link relays /
Can be used to share product type between different machines. Can be used for interlocking between different machines.
Easy wiring between PLCs with twin-core cabling.
Link data register
Product type data
Process machine
Link data register
Product type data
Assembly
machine
Link data register
Product type data
Inspection
machine
RS485
Masterless communication method
(when PLC linkage is achieved with link relays and link data registers)
The masterless communication method means that even if a connected device (station) goes into power off, operations to automatically switch the master station continue. Start up is smooth and the recovery from malfunctions is also potentially faster.
Previous models
Usual master-slave communication
If the master station is not on, communication cannot take place.
Errors occur when devices are not turned on in sequence.
Master station
Slave | Slave | Slave | Slave |
station | station | station | station |
Use of insulated RS485
With the FPΣ (Sigma)
Masterless communication using the FPΣ (Sigma)
Even if a station goes into a power- off state, communications between the other stations continue.
Link | Link | Link | Link |
station | station | station | station |
Uses the insulated RS485, which is highly reliable and largely impervious to noise.
Transmission speed: Max. 115.2kbits/s | Transmission distance: Max. 1.200m |
6 | 02/2006 |