51
Chapter 4
4.4 Status Registers
You can set the standard monitor or extension monitor by “Output mode
select command”
- Status0 does not have any restrictions on reading. Since Status1,
Status2, and Status3 share their addresses with the lower data byte of the
preset counter, there is a restriction on reading from them.
To read Status1, Status2, or Status3, first select the R7 register (or a regis-
ter other than R0 in the normal monitor mode). Then you can read Status1
from the lower data byte, Status2 from the middle data byte, and Status3
from the upper data byte.
- Status0 to 3 are latched while reading. The data bus will not change
while in the read cycle.
- After operation has stopped, if the start mode command is read with the
extension monitor, the start control mode bit will be 0.
- When reading using the register select command, the register selection
is limited to R3 only.
Mode
Addr
ess\
Regi
ster
RD0,
RD4,
RD8,
RD12
RD1, RD5,
RD9, RD13
RD2, RD6,
RD10, RD14
RD3, RD7,
RD11, RD15
Standard
Monitor
R0
Status0 R0 lower byte R0 middle byte
R0 upper byte
R1 to
R7
Status0 Status1
0
0
Extension
Monitor
R0
Status0 R0 lower byte R0 middle byte
R0 upper byte
R1
Status0 R1 lower byte R1 upper byte
Start mode
command
R2
Status0 R2 lower byte R2 upper byte
Control mode
command
R3
Status0 R3 lower byte R3 upper byte
Register select
command
R4
Status0 R4 lower byte R4 upper byte
Output mode
command
R5
Status0 R5 lower byte R5 upper byte
R7 data
R6
Status0 R6 data
Speed lower
byte
Speed upper
byte
R7
Status0 Status1
Status2
Status3
Summary of Contents for PCI-1243U
Page 1: ...PCI 1243U 4 Axis Stepping Motor Control Card User Manual ...
Page 8: ...PCI 1243U User Manual viii ...
Page 14: ...PCI 1243U User Manual 6 ...
Page 35: ...27 Chapter3 Figure 3 8 Point to Point Movement ...
Page 38: ...PCI 1243U User Manual 30 ...
Page 80: ...PCI 1243U User Manual 72 Appendix A Diagrams A 1 Jumper and Switch Layout ...
Page 82: ...PCI 1243U User Manual 74 ...
Page 88: ...PCI 1243U User Manual 80 ...