2
PROFIBUS Master Module
GFK-2739
Installation in Hazardous Areas
The following information is for products bearing the UL marking for Hazardous Locations or ATEX marking for
explosive atmospheres:
EQUIPMENT LABELED WITH REFERENCE TO CLASS I, GROUPS A, B, C & D, DIV. 2 HAZARDOUS LOCATIONS IS
SUITABLE FOR USE IN CLASS I, DIVISION 2, GROUPS A, B, C, D OR NON-HAZARDOUS LOCATIONS ONLY
Equipment labeled with
II 3 G is suitable for use in Group 2 Category 3 environments.
WARNING - EXPLOSION HAZARD - SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I,
DIVISION 2;
WARNING - EXPLOSION HAZARD - WHEN IN HAZARDOUS LOCATIONS, TURN OFF POWER BEFORE REPLACING
OR WIRING MODULES; AND
WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN SWITCHED
OFF OR THE AREA IS KNOWN TO BE NONHAZARDOUS.
WARNING - EXPLOSION HAZARD - USB PORT IS ONLY FOR USE IN NONHAZARDOUS LOCATIONS, DO NOT
USE UNLESS AREA IS KNOWN TO BE NON-HAZARDOUS.
ATEX Marking
II 3 G Ex nA IIC T4 X 0°C<Ta<60°C
Diagnostic Status Arrays
The starting addresses of these arrays are set in the hardware configuration. For information on using memory mapped
COMMREQs, refer to
“Diagnostics” in
VersaMax PROFIBUS Master User’s Manual,
GFK-2740.
Slave Status Bit Array.
This 128*-bit array contains a bit for each slave. If communication with a slave has no errors, the
bit corresponding to the slave (determined by its network address) is set. If the communication has errors or is not
occurring for any reason, the bit is cleared. The Master also maintains its own status in the bit corresponding to its network
address.
Slave Diagnostics ID Array.
If diagnostics are pending, the first word of this two-word array contains the station address
of the first slave that has diagnostics. The diagnostics can be read using the Get Device Diagnostics COMMREQ
(command 4). This clears the word and the master then places the next pending diagnostic address into the Slave
Diagnostics word. If this word is zero there are no pending diagnostics. The second word of this array is reserved and set
to 0.
DPV1 Alarm Status Array.
The 32-bit DPV1 Alarm Status array is used at the beginning of a scan to receive the station
address of a slave that has sent a DPV1 Alarm message. If another slave has sent a DPV1 alarm message, it is ignored
until the first one has been serviced, and will then appear in a subsequent scan.
Slave Configured Bits.
This 128-bit array indicates which slaves on the PROFIBUS network are configured. Each slave
has a corresponding bit in this array. A slave's configuration status address equals Start A Station Address of the
slave.
Slave Diagnostic Bits.
This 128-bit array indicates which slaves on the PROFIBUS network have diagnostic data
available. The diagnostics can be read using the Get Device Diagnostics COMMREQ (command 4).
Each slave has a corresponding bit in this array. A slave's diagnostic status address equals Start A Station
Address of the slave.
PROFIBUS Master Module LEDs
On initial powerup with no configuration stored, the LED display should be as shown on page 3. For details on the Master
module’s LED operation, refer to the
VersaMax PROFIBUS Master User’s Manual,
GFK-2740.
