Data stream
The flow chart below illustrates the data stream of the EM37xx.
The raw value of the sensor can be read in object 0x80nE:01.
After completion of the process chain, the "value" index: 0x60n0:11 is output to the controller.
The individual objects of the process are described below.
Undershoot and overshoot of the measuring range (underrange, overrange), index 0x60n0:01, 0x60n0:02
The limits refer to the raw value of the sensor.
Terminal module | Overrange / Underrange | PDO | Error bit | LED | |
|---|---|---|---|---|---|
EM3701 | Nominal pressure range | -100 mbar < (P1-P2) < 100 mbar | (0x6000:01 and | 0x60n0:07: 0 | Overrange and underrange (red): off |
Underrange | (P1-P2) < -100 mbar | 0x6000:01: 1 | 0x60n0:07: 1 | Overrange (red): on | |
Overrange | (P1-P2) > 100 mbar | 0x6000:02: 1 | 0x60n0:07: 1 | Underrange (red): on | |
EM3702 | Nominal pressure range | 0 mbar < Pn < 7500 mbar | (0x60n0:01 and 0x60n0:02): 0 | 0x60n0:07: 0 | Error Xn (red): off |
Underrange | Pn < -100 mbar | 0x60n0:01: 1 | 0x60n0:07: 1 | Error Xn (red): on | |
Overrange | Pn > 7500 mbar | 0x60n0:02: 1 | 0x60n0:07: 1 | Error Xn (red): on | |
EM3712 | Nominal pressure range | -1000 mbar < Pn < +1000 mbar | (0x60n0:01 and 0x60n0:02): 0 | 0x60n0:07: 0 | Error Xn (red): off |
Underrange | Pn < -1000 mbar | 0x60n0:01: 1 | 0x60n0:07: 1 | Error Xn (red): on | |
Overrange | Pn > +1000 mbar | 0x60n0:02: 1 | 0x60n0:07: 1 | Error Xn (red): on | |
Notice | |
Measuring range exceeded Pressure values below or above the permitted measuring range may lead to destruction of the pressure measuring unit. The limits must be observed. |
The error LED lights up if the error bit is set.
 | Error bit (index 0x60n0:07) The error bit indicates an overrange or underrange. Terminal EM3702 (0 to 7500 mbar) shows an overrange or an underrange of -100 mbar. |