GE 90*-30 PLC Series - Page 88

GFK-1322A Appendix Q Quick Start Guide Q-9
Q
2
.
Using the LBIM configuration utility, assign NV types to the module and the registers in the
PLC memory space to which the variable types will map.
Note
We recommend that you limit configuration names to a maximum of 7
characters to ensure compatibility with Logicmaster 90 software. (The LBIM
configuration software allows up to 10 characters.)
Example: SNVT_temp and SNVT_count variable types are one-word values that map directly
into a single register address (Figure Q-3). SNVT_freq_f and SNVT_temp_f are double word
values that map into two register locations. The type
display
is a three-word, user-defined NV that
maps into three locations.
At this point, the module mapping is defined, but the actual NVs are not yet bound to the module
and the module is also not configured with the L
ON
W
ORKS
network image.
a45644
CPU
Re
g
1
Re
g
2
Re
g
3
Re
g
4
Re
g
5
Reg 6
Re
g
7
Re
g
8
Re
g
9
Re
g
10
Re
g
11
Re
g
12
Re
g
13
SNVT_temp
SNVT_count
SNVT_freq_f
SNVT_temp
SNVT_temp_f
PLC LonWorks BIM
SNVT_temp
SNVT_temp
SNVT_count
displa
y
Figure Q-3. Example: Assigning Network Variables to the Module and the PLC Registers