Example Service Data Communication - Baumuller b maXX 5000 Series Instruction Handbook Manual

7.5
Service data (acyclic communication)
The data of register 611 to max. 650 (depending on the length setting in register 610) is
written to the selected parameter in case of an writing access to register 611.
The b maXX firstly writes all values to the Modbus register and after that copies the values
to the selected parameters in case of writing access to register 611 - 6xx with the function
code "Write multiple register".
The data of register 611 to max. 650 (depending on the length setting in register 610) is
copied to the selected parameter in case of an reading access to register 611.
The b maXX firstly copies all values to the register and after that sends the Modbus read
answer with the updated data in case the of reading access to register 611 - 6xx with the
function code "Read multiple register".
The result of the writing and reading access to register 611 is shown in b maXX error code
in register 651 - 652. If no errors appeared, the register 651 and 652 is zero.
7.5.1

Example service data communication

To the following parameter the value 0x12345678 should be firstly written and after that
should be read.
Parameter of the second axis: F = 0; DS = 0; FB = 126; PNR = 61; FBI = 0; index0-3 = 0;
length = 4 Byte
1 Following values must be written to 600 - 610. The values can be written one by one
2 Writing of the value 0x12345678 with function code 16 "Write multiple register" to reg-
3 Read register 651 and 652 in order to check whether the writing access has been with-
4 Read register 611 - 614 with function code "Read multiple register". Register 600 - 610
5 Read register 651 - 652 in order to check whether the reading access has been with-
56 Instruction handbook b maXX 5000 add-on module MOD
Document No.: 5.19015.01
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or with the command "Write multiple register" :
a) Reg. 600 (F)
b) Reg. 601 (DS)
c) Reg. 602 (FB)
d) Reg. 603 (PNR)
e) Reg. 604 (FBI)
f) Reg. 605 - 608 (Index)
g) Reg. 609 (Axis)
h) Reg. 610 (Length)
ister 611 - 614.
a) Reg. 611 = 0x78
b) Reg. 612 = 0x56
c) Reg. 613 = 0x34
d) Reg. 614 = 0x12
out error.
contain the selected parameters from step 1, therefore this register must not written to
again .
out error.
= 0
= 0
= 126
= 61
= 0
= 0
= 2
= 4
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