AUMA SIMA 2, Manual

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Figure 3: Hot standby system redundancy in a joint housing (example)
Single Master Station SIMA² in non-redundant version with only one SIMA² subsystem for fieldbus
communication. Controls of a Single Master Station are always located on the left
side, whereby the multi-touchscreen is located on the right side of the housing.
SIMA A / SIMA B SIMA A or SIMA B is a clear designation of both physical subsystems when SIMA²
is arranged in hot standby system redundancy.
Host
Superordinate automation system. Also referred to as DCS or SCADA.
In sites without superordinate automation system (host), SIMA² is deployed in the
so-called stand-alone mode.
Stand-alone mode Application of SIMA² without host. Operation commands for the actuators are specified
manually by the user either via the multi-touchscreen or via the integral web server.
Status or diagnostic signals of actuators are visually monitored by the user.
Figure 4: Stand-alone mode (example)
Loop redundancy
A fieldbus cable is led from the SIMA² to the first actuator and then to the next actuator
until reaching the last actuator and back to SIMA², thus arranged in loop configuration.
8
SIMA² Master Station
Identification MODBUS RTU, MODBUS TCP/IP to DCS