25
Locations marked “Reserved” in Table 4 are reserved for future use.
Presently, all “Reserved” input data is set to 0 by the PBDP-110. Future
firmware releases, however, may use these locations for data transfer.
Two other modules are also available (Module 3 and Module 4). These
modules are primarily intended for applications that require a compact data
size, and do not need access to all available drive parameters.
Module #3, intended for applications where only one drive is connected to the
PBDP-110 (via Channel A), is comprised of 8 bytes structured as four 16-bit
words. Module #4, intended for applications where drives are connected to
both Channel A and Channel B, is comprised of 16 bytes structured as eight
16-bit words. Both of these modules are combined in Table 5.
Table 5: Module 3 and Module 4 Input Data Format
Offset Data Offset Data
0
Drive A status
high byte
8
Drive B status
high byte
1
Drive A status
low byte
9
Drive B status
low byte
2
Drive A output frequency
high byte
10
Drive B output frequency
high byte
3
Drive A output frequency
low byte
11
Drive B output frequency
low byte
4
Drive A output current
high byte
12
Drive B output current
high byte
5
Drive A output current
low byte
13
Drive B output current
low byte
6
Drive A output voltage
high byte
14
Drive B output voltage
high byte
7
Drive A output voltage
low byte
15
Drive B output voltage
low byte
The format of all information transferred for Drive B is identical to that for Drive
A. Therefore, all data descriptions given here apply equally for both Drives A
and B.
Status Word
Bit-mapped drive status word (drive parameter number FE01). This is the
location where run/stop status, etc. values are monitored. An example status
word can be found in Table 6. Because the format of this status word depends
on the drive’s specifications, please refer to your drive’s Serial
Communications Manual for the exact structure of this word.
