48
The Slave addresses corresponding (i.e. controlled by) each Master/Expansion
Master are shown in the table below.
The Slave addresses corresponding to each Master and Expansion Master Unit
number are fixed.
Master/Expan- I/O type Word
4-point Slave 8-point Slave 16-point Slave
sion Master
Address Bit Address Bit Address Bit
Master Output n #0 00 to 03 #0 00 to 07 #0 00 to 15
#1 04 to 07
#2 08 to 11 #2 08 to 15
#3 12 to 15
n+1 #4 00 to 03 #4 00 to 07 #4 00 to 15
#5 04 to 07
#6 08 to 11 #6 08 to 15
#7 12 to 15
Input m #8 00 to 03 #8 00 to 07 #8 00 to 15
#9 04 to 07
#10 08 to 11 #10 08 to 15
#11 12 to 15
m+1 #12 00 to 03 #12 00 to 07 #12 00 to 15
#13 04 to 07
#14 08 to 11 #14 08 to 15
#15 12 to 15
Expansion Input
j #16 00 to 03 #16 00 to 07 #16 00 to 15
Master, Unit 1 (Output)
#17 04 to 07
#18 08 to 11 #18 08 to 15
#19 12 to 15
j+1 #20 00 to 03 #20 00 to 07 #20 00 to 15
#21 04 to 07
#22 08 to 11 #22 08 to 15
#23 12 to 15
Expansion Input
k
Expansion Master Unit 2 is
#24 00 to 07 #24 00 to 15
Master, Unit 2 (Output) for 8-/16-point Slaves only.
#25 08 to 15
k+1
Do not set 4-point Slaves
between #24 and #27.
#26 00 to 07 #26 00 to 15
between #24 and #27.
#27 08 to 15
Note 1. Addresses n,m,j,k are the start addresses allocated in CQM1H/CQM1 for
the Master or Expansion Master, as shown above.
2. Expansion Master Unit 2 is for 8-/16-point Slaves only. Do not set 4-point
Slave addresses between #24 and #27.
3. If the number of I/O words for the Master and Expansion Master is set to 1
word (16 points), the corresponding Slave address (n+1), (m+1), (j+1), (k+1)
(the shaded areas) are invalid. An error results if these settings are incor-
rect. In particular, if the Master output is set to 1 word but the output Slave
address is mistakenly set between #4 and #7, the Slave outputs the same
data as the n address. All Slave outputs corresponding to the Expansion
Master are OFF (0).
4. The following bits are allocated as Master and Expansion Master addresses
and cannot be used by the Slaves.
Input bits: always OFF
Output bits: can be used as work bits
Relationship Between
Master/Expansion Masters
and Slave Addresses
Word Allocation Section 4-1
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