Method of operation
The block does not communicate directly with the camera measuring system. The ST programs
in the FB blocks "FB_Receive_Analysis" and "FB_Send_Preparation" are required for this
purpose. Integration into the execution system is described in Chapter Structure of the function
module (Page 30).
Connections
The inputs of the DCC block are connected via unit-global variables of the MCC source file
"AddOn" to the outputs of the "FB_Receive_Analysis" block. The "iHoist_Height_PLC" output of
the DCC block is interconnected with the "FB_Send_Preparation" block input using a unit-
global variable. This signal is transferred to the camera measuring system via Ethernet. The
other DCC block outputs are connected with the inputs of the DCC block using retentive unit-
global variables.
Table 3-11 DCC_SCCAMERA connections
Name Type Data
type
Unit-global variables of "AddOn" Meaning
BCAMERA_OK IN BOOL camera_cam_camera_ok Camera OK
IX_POS IN DINT camera_cam_x_pos Deflection in x direction
IV_X IN DINT camera_cam_v_x Swaying velocity in x direction
IY_POS IN DINT camera_cam_y_pos Deflection in y direction
IV_Y IN DINT camera_cam_v_y Swaying velocity in y direction
ISKEW IN DINT camera_cam_skew Reflector rotation
IV_SKEW IN DINT camera_cam_v_skew Velocity of rotation
IHOIST_HEIGHT IN DINT camera_cam_hoist_height Hoist position (measured by the
camera)
UIN_ADDR_1 IN USINT camera_sc_addr [0] IP address of the camera (part 1)
UIN_ADDR_2 IN USINT camera_sc_addr [1] IP address of the camera (part 2)
UIN_ADDR_3 IN USINT camera_sc_addr [2] IP address of the camera (part 3)
UIN_ADDR_4 IN USINT camera_sc_addr [3] IP address of the camera (part 4)
UIN_PORT IN UINT camera_sc_port Camera port
IHOIST_HEIGHT_PLC OUT DINT camera_sc_hoist_height_plc Transfer hoist position from the
PLC
UOUT_ADDR_1 OUT USINT camera_sc_addr [0] IP address of the camera (part 1)
UOUT_ADDR_2 OUT USINT camera_sc_addr [1] IP address of the camera (part 2)
UOUT_ADDR_3 OUT USINT camera_sc_addr [2] IP address of the camera (part 3)
UOUT_ADDR_4 OUT USINT camera_sc_addr [3] IP address of the camera (part 4)
UOUT_PORT OUT UINT camera_sc_port Camera port
BCAMERA_VALID OUT Camera signal valid
BERROR OUT BOOL Error bit from the block
IERRORID OUT DINT Error number from the block
Overview of the software
3.3 Sway control function blocks
SC integrated STS, GSU
Operating Instructions, 07/2019, A5E48271265B AA 47
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