Beckhoff BK3120 User Manual

PROFIBUS DP communication
BK3xx0 57Version: 4.3.0
PROFIBUS coupler data (Slot_Number = 0)
The data associated with the PROFIBUS coupler is addressed via an index:
Index Access Description
1-2 R/W
Module assignment in multi-configuration mode [}73]
5 R
Firmware information [}59]
9-19 R/W
Device configuration [}59] (Table 9)
90 R
K-bus status [}60] (Table 90)
98 R/W
Internal cycle time [}60]
99 W
Commands: local bus reset [}69], starting or stopping the internal cycle time
measurement [}60]
Function module data (Slot_Number > 0)
Depending on the type of function module, access is made either to the registers (max. 4 channels, each
with 64 registers) or to the parameters (only supported by a few function modules, where the quantity of data
is insufficient for the register model)
Accessing registers
Index Access Length Description
0-63 R(/W) 2 Registers 0-63 of the channel 1 in the function module
64-127 R(/W) 2 Registers 0-63 of the channel 2 in the function module
128-191 R(/W) 2 Registers 0-63 of the channel 3 in the function module
192-254 R(/W) 2 Registers 0-63 of the channel 4 in the function module
Accessing parameters
Index Access Length Description
0 R(/W) 4-32 (must be divisible by 4) Parameters 0x0000-0x0007 of the function
module
1 R(/W) 4-32 (must be divisible by 4) Parameters 0x0008-0x000F of the function
module
... ... ...
127 R(/W) 4-32 (must be divisible by 4) Parameters 0x03F8-0x03FF of the function
module
5.2.2 Assignment of the DPV1 slot number
The Slot_Number = 0 addresses the data of the Bus Coupler, while Slot_Number > 0 addresses the data
(registers or parameters (KL6201)) of the complex terminals:
Device Slot number = 0 Slot number > 0
BK3120,
BK3150,
BK3500, BK3520
Data in Bus Coupler Slot_Number = 1:
first complex terminal plugged into the Bus Coupler
(KL15xx, KL25xx, KL3xxx, KL4xxx, KL5xxx, KL6xxx,
KL8xxx)
Slot_Number = 2:
second complex terminal plugged into the Bus Coupler
(KL15xx, KL25xx, KL3xxx, KL4xxx, KL5xxx, KL6xxx,
KL8xxx)
etc.
BK3x10/LC3100 Data in Bus Coupler Not present, because neither the BK3x10 nor the LC3100
support complex terminals.

Beckhoff BK3120 Specifications

General

Brand	Beckhoff
Model	BK3120
Category	Adapter
Language	English