GE VersaMax GFK-2721A Manual page 16

1
The PROFINET Scanner supports the following network media type and distances.
Media Type Connector
Type
100BASE-FX SC or
SC-Duplex
10/100BASE-T RJ45
VersaMax PNS modules and other participating modules can be connected in a
daisy-chain/line, star, or ring (redundant media) topology.
VLAN Priority Settings for the PROFINET Scanner
The VersaMax PNS supports VLAN Priorities as well as incoming traffic that does not include a
VLAN header. The Ethernet switch in the PROFINET Scanner supports two traffic classes,
assigning VLAN Priorities to these classes based on whether rapid arrival of the traffic is critical
to the system, or less important.
VLAN Priority
7, 6, 5 Realtime (High Priority). This includes the following Ethernet traffic:
PTCP, MRP, MRRT, RT_CLASS_2, RT_CLASS_1, RT_CLASS_UDP, High Priority
RTA_CLASS_1, High Priority RTA_CLASS_UDP, Low Priority RTA_CLASS_1, Low
Priority RTA_CLASS_UDP
4, 3, 2, 1, 0 Non-realtime (Lower Priority), This includes the following Ethernet traffic: IP, DCP,
other untagged traffic
An external switch that supports only two traffic queues must be configured like the PROFINET
Scanner, as listed in the table above. An external switch that does not support a VLAN priority
mapping that exactly matches the mapping used by the VersaMax PROFINET Scanner can be
used if it can be configured with the following relationships between VLAN priorities:

VLAN Priority 7 is forwarded with at least as much preference as VLAN Priority 6.

VLAN Priority 6 is forwarded with at least as much preference as VLAN Priority 5.

VLAN Priority 5 is forwarded with more preference than VLAN Priorities 0, 1, 2, 3 and 4.
If the external switch does not allow VLAN priority 4 to be treated differently from priority 5, it
should be used only if no device on the network will generate VLAN Priority 4 Ethernet Traffic.
1-10
Wavelength
(nm)
1300
-
VersaMax PROFINET Scanner Manual – December 2013
Media Core
Size(μm)
Type
MMF 62.5
50
50
CAT5/ -
CAT5e/
CAT6
Preference / Traffic Class
Modal Bandwidth Distance (m)
(MHz – Km)
2 – 2,000 (Full-
500
Duplex)
400
2 – 400 (Half-
500
Duplex)
- 100
(maximum)
GFK-2721A