HIMA H41q User Manual

F 8627X (0650)
401
7.3 Mapping of the BUSCOM variables on the F 8627X
To transmit the BUSCOM variables, they are mapped from the F 865x central module to the
F 8627X communication module.
The BUSCOM variables from the F 865x are copied into two memory areas located in the
F 8627X internal memory.
The memory areas EV and IV reflect the export and the import variables respectively. In the
memory area, a BUSCOM variable is described by its identity number.
7.3.1 Example 1
In this example the WORD variables in the export area 0 (on the F865x) start with the BUS-
COM address 0 and are mapped to the memory area EV (on the F 8627X) with the identity
number 0.
The identity numbers of the WORD variables in memory area EV are in ascending order up to
the last WORD variable (identity number 110) from export area 0.
In this example, the
BOOL variables in export area 0 (on the F 865x) start with BUSCOM ad-
dress 0 and are mapped to memory area EV (on the F 8627X) beginning with identity number
111, which follows the last identity number of the WORD variables (i.e. 110).
The identity numbers of the BOOL variables in memory area EV are in ascending order up to
the last BOOL variable (indentity number 150) from export area 0.
Figure 19: Mapping of WORD- and BOOL-variables from export area 0
Note This scheme for converting BUSCOM variables (on the F 865x) into
identity numbers (on the F 8627X) is used for WORD as well as for
BOOL variables.
Consider at MODBUS Port 8896, that you neither reading nor writing with
a Modbus telegram beyond the address range of a variable type
(see also Chapter 6.4.4)
F 865x
BUSCOM areas
Export area (EA)
memory area EV
ER-0000
0000
0110
ER-4096
word
BUSCOM address
word
EV-0000
0
110
Identity number
ER-8191
ER-2047
EV-0000
261
bool
111
0000
0150
bool
ER-0000
ER-2047
area 1
area 0
ER-4096
ER-8191
for Export variables (EV)
F 8627X

HIMA H41q Specifications

General

Brand	HIMA
Model	H41q
Category	Industrial Equipment
Language	English