Baumer GNAMG - Manual (Page 19)

Manual_GNAMG_Profibus_EN.doc 19/19 Baumer IVO GmbH & Co. KG
04.05.11 Villingen-Schwenningen, Germany
7.2.5. Terminal assignment
Pin M12 Terminal Significance
Pin 1 UB Supply voltage 10...30 VDC
Pin 3 GND Ground terminal for UB
Pin 2 A Negative serial data line
Pin 4 B Positive serial data line
M12 connector
for serial data line
for power supply
1
3 4
5
2
4 3 5
1 2
male female
1
3 4
2
Terminals the same designation are connected to each other internally and identical in their functions. The
maximum load of the internal clamps UB-UB and GND-GND is 1 A each.
(A and B are each isolated with 100 nH inductivity for 12 MBaud operation).
• Carefully press the cover of the inclination sensor over the sealing rubber, taking care not to tilt it. The
cover must fully rest against the base plate.
• Tighten both the fastening screws firmly in the same direction.
The inclination sensor housing and braided shield of the connecting cable are only ideally connected if the
cover is resting fully against the base plate (positive locking).
7.2.6. Status indicating elements (LEDs)
Bus cover provides at rear an integrated DUO LED.
Colour Status
LED green continuous Inclination sensor is in mode „Data_Exchange“
LED yellow continuous Inclination sensor in ramp-up status or less bus contact
7.2.7. Profibus
cable
EN 50170 specifies two types of cables, A and B. Cable type B is obsolete and should no longer be used
for new applications. With cable type A , all transmission rates up to 12 MBaud can be used.
Features
Data
Shaft resistance in Ohm 135 to 165 at 3 to 20 MHz
Operating capacity (pF/m) Less than 30
Loop resistance (Ohm/km) Less than 110
Core diameter (mm) Greater than 0,64
Core cross section (mm) Greater than 0,34
Transmission speed depending on cable length
Baud rate in
kBaud
9,6 19,2 93,75 187,5 500 1500 3000 12000
Cable
length in m
120
0
1200 1200 1000 400 200 100 100