Bosch IndraControl PR21 - 12 Device description; 12.1 Reset and power buttons; 12.2 Operating and error display

● RS-232 mode
● RS-485 mode
● RS-422 mode
12 Device description
The PR21 with Ubuntu Core does not support any UPS.
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① Functional earth
② Power button
③ Reset button
④, ⑤ Ethernet interfaces
⑥ USB port (USB3.0)
⑦ HDMI port
⑧ LED, hard disk access
⑨ LED power
⑩ Voltage supply
⑪, ⑫, ⑬ USB interfaces (USB2.0)
⑭, ⑮, Serial interfaces
Fig. 12-1: Device views
12.1 Reset and power buttons
Reset button SF1 Hardware reset
Power button SF2 On, off Operating system shutdown
Tab. 12-1: Reset and power buttons
12.2 Operating and error display
LED On Off Flashes
Vin S0: green, S3/S5: yel-
low
No supply voltage con-
nected
N/A
HD N/A no mSATA access or de-
vice shut down
mSATA access read/
write: flashing green
S0 Working
S3 Standby
S5 Soft-Off
Tab. 12-2: LED description
IndraControl PR21 Embedded Automa-
tion Computer
21/29
Device description
R911389662_Edition 02 Bosch Rexroth AG