9 - 4 VM600 networking manual MAVM600-NET/E
Edition 9 - February 2018
Definition of registers
SETTING UP A MODBUS CONNECTION (CPUM SW VERSION 071 OR LATER)
9.2.4 The MAPPING section
The MAPPING section has the following syntax:
Address:Function[:DataType[:Min:Max]] = SlotNr:CardType:ValueName
NOTE: The section Min:Max is optional and is used only for scaled values.
The possible settings for each of the parameters are shown in Table 9-6.
Table 9-6: MAPPING section settings
MAPPING
section setting
Allowed values
Address 0 to 65535
Function Modbus functions 01 to 06, 15 (0x0F) and 16 (0x10)
DataType One of the following:
B Bit (1-bit)
F
Float (32-bit). Ordering is of the type FM1 by default
(CDBA). See Note 1
FB Float (32-bit). Ordered as ‘big endian’ (ABCD)
FL Float (32-bit). Ordered as ‘little endian’ (DCBA)
FM1 Float (32-bit). Ordered as ‘mixed endian 1’ (CDBA)
FM2 Float (32-bit). Ordered as ‘mixed endian 2’ (BADC)
L
Long word (32-bit). Ordering is by default of the type LB
(ABCD). See Note 2
LB Long word (32-bit). Ordered as ‘big endian’ (ABCD)
LL Long word (32-bit). Ordered as ‘little endian’ (DCBA)
LM1 Long word (32-bit). Ordered as ‘mixed endian 1” (CDBA)
LM2 Long word (32-bit). Ordered as ‘mixed endian 2’ (BADC)
U 16-bit unsigned (0x0000 to 0xFFFF)
Min:Max
The section Min:Max is optional and shall be used only for scaled
values. See Note 3
SlotNr
This is dependent on the rack. For example, on the current VM600
System with the ABE 040/42 rack, the measurement card slots are
numbered form 3 to 14.
CardType One of the following:
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