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6
GRT1-PRT PROFIBUS Communication Unit
Section 1-2
Protocol Specification
Item
Specification
P
R
O
F
IB
U
S
i
n
te
rf
a
c
e
Applicable standards
EN50170, Volume 2
PROFIBUS DP Extensions to EN50170 (DP-V1)
Protocol type supported
PROFIBUS DP
PROFIBUS DP-V1, Class 2
PROFIBUS Unit type
PROFIBUS DP-V1 Slave
PROFIBUS Media type
RS-485, galvanically isolated from the PLC
PROFIBUS Connector
9-pin sub-D female connector (#4/40 UNC thread)
Termination according to EN50170 provided by the cable connector
Unit device address range
0 ~ 99, set through the rotary switches on the front
baud rates supported
Selectable through the configurator:
• 9.6 kbit/s
• 19.2 kbit/s
• 45.45 kbit/s
• 93.75 kbit/s
• 187 kbit/s
• 500 kbit/s
• 1.5 Mbit/s
• 3 Mbit/s
• 6 Mbit/s
• 12 Mbit/s
PR
O
F
IB
US DP
Ser
v
ic
es su
ppor
te
d
Master Class 1 - Slave cyclic services
• Set_Prm
• Chk_Cfg
• Data_Exchange
• Slave_Diag
• Global-Control - SYNC / UNSYNC, FREEZE / UNFREEZE, CLEAR
• Get_Cfg
• Rd_Inp
• Rd_Outp
Master Class 1 - Slave acyclic services
Not supported
Master Class 2 - Slave acyclic services
MSAC2_Initiate
MSAC2_Read
MSAC2_Write
MSAC2_Abort
I/
O
D
a
ta
Number of I/O module definitions
65 max. over all configured slave devices
Number of I/O data
128 bytes max. of Input data
128 bytes max. of output data
Number of diagnostics data
Up to 36 bytes max. of diagnostics
GSD file
OC_098F.gsd
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