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Locations marked “Reserved” in the above table 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.
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 2. Because the format of this status word depends on the drive
manufacturer’s specifications, please refer to your drive’s Serial Communications
Manual for the exact structure of this word.
Note that bit #15 is normally “reserved” by the drive manufacturer. The PBDP-110
uses this bit, however, to indicate whether it has established an open line of
communications with the drive connected to that channel. Once a connection has
been established with the drive, this bit will normally indicate “Online”. While
searching for a drive (such as during initialization) and when no drive is connected,
this bit will indicate “Offline”, and all other input data will be “0”. If this status bit
indicates “Offline”, but there is a drive connected to the channel in question, check
the cable connections and verify that the drive is powered. If an “Offline” indication
appears intermittently during operation, check the quality of the drive communication
cable connections, and verify that the drive communication cable is not routed near
other electrical noise-producing cables or equipment.
Table 2 : Example Status Word Format (S9 Drive)
Bit Function 0 1
15 Drive online / offline status Offline Online
14 Reserved Always “0”
13 Reserved Always “0”
12 Reserved Always “0”
11 Reserved Always “0”
10 Run / stop status Stopped Running
9 Forward / reverse status Forward Reverse
High Byte
8 Jog status Not jogging Jogging
7 DC injection braking status Not DC injection
braking
DC injection
braking
6 Accel / decel #1/#2 status #1 #2
5 Reserved Always “0”
4 Reserved Always “0”
3 Reserved Always “0”
2 Reserved Always “0”
1 Reserved Always “0”
Low Byte
0 Reserved Always “0”