Baumer N 153 - Manual (Page 4)

N 153
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2. Terminal assignment
Pin Assignment Core colour DIN47100 IEC757
Pin 1 Tx/Rx-, RS485 white orange
Pin 2 Tx/Rx+, RS485 brown brown
Pin 3 Sensor supply +24 V yellow red
Pin 4 Sensor supply 0 V green blackk
male connector M8 female connector M8
2
4
3
1
2
4 3
1
Connect power supply that is free from interference emission. The supply must not be used as par-
allel supply of drives, shields, magnetic valves, etc.
Apply DC according to the terminal assignment
Power supply: 24 VDC ±20 %
Shield
Use shielded cables only. Ground of the shield must be provided at the machine (two examples corresponding
to the cable applied, see drawings).
Abschirmungsanschluss
3. Interface
3.1. Interface data
Type: RS485
Baudrate: 19200
Parity: No
Data bits:
8
Stop bits: 1
Handshake: No
Checksum: Yes
(CRC)
* To avoid bus collisions a minimum timeout reply of 1 ms (default parameter)
is to be kept, i.e. the time elapsed between transmitting the last bit of the
query until start transmitting the 1st bit of the SPA response.
The operator should see that due to the minimized timeout reply of 1 ms
the bus switching time after having transmitted the last bit must not exceed
1 ms.
The default parameter of 1 ms can optionally be altered by serial interface
in steps of 0,1 ms within the range of 0,1 ... 60 ms. Refer to command „x“
(78h).
Timeout reply*: 0,1...60 ms
BUS switching time**: <0,1 ms
** The BUS switching time is the time the SPA requires to be ready again for
transmission receipt after having replied to host.