Instructions:
You can use the OP 73 as a handheld as follows:
Use a TD-PPI cable (6ES7 901-3EB10-0XA0) to connect the OP 73 directly to the MPI interface of an S7-300/400 controller or to the PPI interface of an S7-200 controller. You do not need an additional power supply for the OP.

Please pay attention to the degree of protection of the OP 73. The OP 73 has IP65 at the front and IP20 at the back.

The example below shows how you can configure an OP 73 as a handheld.
A sample project with the functions described is available for downloading at the end of this entry.
 

No.	Procedure
1	Fig. 01 In "Picture 01" (Start picture) you enter the connection parameters for the communication connection of the OP73 to CPU. Press the "Start" button or function key "F4" to execute the "Change Connection" function. The "Change Connection" function disconnects the connection to the controller currently being used and sets up a new connection to the controller specified. Use the "Up" and "Down" arrow keys to navigate to the individual IO fields. When the edge of the screen is reached, the page changes to the next picture.
2	Fig. 02 The following functions can be executed via Picture 02. "F1" button - Terminate Runtime "F4" button - Switch language (German/English) Use the "Up" and "Down" arrow keys to navigate to the next picture.
3	Fig. 03 Figure 03 shows an example of how to output the value of one single DB. In the "DB number" IO field you enter the relevant number of the data block, e.g. "10". In the "Data word" IO field you enter the relevant number of the data word, e.g. "2". In middle IO field you then get the content of "DB10.DBW2" displayed. (You can also specify a value yourself in this IO field). If the specified data block is not available in the controller, the system message "PLC address error" is displayed. You can manually specify the IO addresses via function keys "F1" to "F4". "F1": count up DB number step by step. "F2": count down DB number step by step. "F3": count up data word number step by step. "F4": count down data word number step by step. Use the arrow keys to navigate to the individual IO fields. When the edge of the screen is reached, the page changes to the next picture.
4	Fig. 04 Figure 04 shows an example of how to output the values of two DBs. In the "DB" IO field you enter the relevant number of the data block, e.g. "20". In the "DBW" IO field you enter the relevant number of the data word, e.g. "2". In adjacent IO fields you then get the content of "DB20.DBW2" displayed. (You can also specify a value yourself in this IO field). Use the arrow keys to navigate to the individual IO fields. When the edge of the screen is reached, the page changes to the next picture.
5	The following figure shows an online view of "Picture 04". Fig. 05

Detailed information on configuring is available in the attached project.
The attached download contains the archived STEP 7 project and integrated WinCC flexible project.

  Attachment 1: Project_01.zip ( 3329 KB )

Runnability and test environment:
The example can be used on all the CPU types of SIMATIC S7-300 and S7-400.
The following table lists the components that have been used to create this entry and verify the functions described.
 

Components	Product and version designation
PC operating system	Microsoft Windows XP SP2
Standard tools	STEP 7 V5.4 SP3
Engineering tools	-
HMI software	WinCC flexible 2007
HMI devices	OP 73
Controllers	S7 CPU 315-2DP

Table 1: Creation environment of the download attached

Keywords:
PDA, PDAs