INFICON PEG100-D Medium to Ultra-High Vacuum Gauge - Manual (Page 4)

2 Starting-up of the PEG100-D
The installed baudrate is saved in EEPROM. After power
ON/OFF the unit works with this installed baudrate.
How to install the auto baudrate detection:
If a fixed baudrate is installed and you want to change
this fixed baudrate to auto baudrate detection, you have
to proceed as follows:
- Switch off the power of the DeviceNet option.
- Set the address switches to the address 99 (initialisati-
on of all values with default values).
- Switch on the power of the DeviceNet option.
The MNS - LED will glow orange.
- Switch off the power of the DeviceNet option.
- Set the address switches to the MAC ID you want the
device to work with.
- Switch on the power of the DeviceNet option.
The MNS - LED will flash green if a communication bet-
ween the PTR and an other device takes place.
The installed auto baudrate detection is saved in
EEPROM. After power ON/OFF the unit works with this
installed auto baudrate detection.
After power ON the unit must find a device to communi-
cate with (duplicate MAC ID check) (for example a
master or a monitor) otherwise the MNS LED will not
flash green and it will be impossible to allocate the PTR.
2.1.2 Address Setting
It is necessarry in a network to give each device a spe-
cific address. Therefore the address switches have to be
set to the requested MAC ID (addresses between 0 and
64 are possible).
2.2 MNS - LED
The MNS - LED corresponds to the ODVA standard. The
following additional features were integrated:
LED Colour: Function
––––––––––––––––––––––––––––––––––––––––––––
ORANGE permanent
The address switches are set to
one of the possible baudrate
settings (90, 91, 92) or to "Initia-
lisation with default values"
(99).
RED permanent Not allowed MAC ID
4
tina12e1 (0106) PEG100-D.ga
For starting-up the fieldbus
- the whole system has to be installed electronically.
- the master has to be configurated
- the address of the slaves has to be set
2.1 Baudrate and Address
Switch
2.1.1 Baudrate
Alternatively you can choose between two kinds of
baudrate installations:
- Auto - Baud - Rate - Detection
If the unit is switched on during data transfer on the net-
work (minimum: 2 nodes installed with data traffic bet-
ween these nodes) the unit detects automatically the
installed baudrate on the bus.
- Pre-installed baudrate
You can install three baudrates (125 kBaud, 250 kBaud
and 500 kBaud) by using the address switches (see figu-
re 1).
The function of the address switches (Figure 1) is as fol-
lows:
Address Function
––––––––––––––––––––––––––––––––––––––––––––
0 - 64
MAC ID
(Address selection by address switches)
90 Baudrate 125 kBaud
91 Baudrate 250 kBaud
92 Baudrate 500 kBaud
99 Initialisation with default values and auto-
baudrate detection
How to install a fixed baudrate:
- Switch off the power of the DeviceNet option.
- Set the address switches to the address 90, 91 or 92
(depending on the baudrate you want)
- Switch on the power of the DeviceNet option.
The MNS - LED will glow orange.
- Switch off the power of the DeviceNet option.
- Set the address switches to the MAC ID you want the
device to work with
- Switch on the power of the DeviceNet option.
The MNS -LED will flash green if a communication bet-
ween the PTR and an other device takes place.
After power ON the unit must find a device to communi-
cate with (duplicate MAC ID check) (for example a
master or a monitor) otherwise the MNS LED will not
flash green and it will be impossible to allocate the PEG.