2-12
Section
CompoBus/S I/O Master Functions (SRM1(-V2) and CPM2C-S Only)
149
3. CompoBus/S Terminals with 16 points can be set for only even number ad-
dresses.
4. Analog Terminals can be set for only even number addresses.
Status Flags
The communications status between CompoBus/S terminals is output through
AR04 to AR07 Slave Add Flags and Slave Communications Error Flags.
Word
Uppermost bits: Slave Communications Error Flags
Lower Bits: Slave Add Flags
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
AR04
OUT
7
OUT
6
OUT
5
OUT
4
OUT
3
OUT
2
OUT
1
OUT
0
OUT
7
OUT
6
OUT
5
OUT
4
OUT
3
OUT
2
OUT
1
OUT
0
AR05
IN7
IN6
IN5
IN4
IN3
IN2
IN1
IN0
IN7
IN6
IN5
IN4
IN3
IN2
IN1
IN0
AR06
OUT
15
OUT
14
OUT
13
OUT
12
OUT
11
OUT
10
OUT
9
OUT
8
OUT
15
OUT
14
OUT
13
OUT
12
OUT
11
OUT
10
OUT
9
OUT
8
AR07
IN15
IN14
IN13
IN12
IN11
IN10
IN9
IN8
IN15
IN14
IN13
IN12
IN11
IN10
IN9
IN8
Note
1. IN0 to IN15 are the input terminals and OUT0 to OUT15 are the output termi-
nals.
2. When the maximum number of CompoBus/S units is set to 16, IN8 to IN15
and OUT8 to OUT15 cannot be used.
3. The Slave Add Flag turns ON when a slave joins the communications. When
the power to the CPU Unit is turned OFF and ON again all bits will turn OFF.
4. The Slave Communications Error Flag turns ON when a slave participating
in the network is separated from the network. The bit will turn OFF when the
slave re-enters the network.
5. For the SRM1, an error will not occur even if the same node address is allo-
cated to more than one slave. Errors will also not occur when communica-
tions go down or communications errors, such as broken lines, occur. Set all
node addresses very carefully and confirm slave operation by including a
section of ladder program using the Status Flags. An example is shown be-
low.
Example
CompoBus/S
communications path
Disconnection (2)
IR 000
Bits 00 to 07
IR 001
Bits 00 to 07
IR 000
Bits 00 to 07
Slave 3
Node 0 (IN0)
Slave 2
Node 2 (IN2)
Slave 1
Node 0 (IN0)
Node address
duplication (1)
SRM1 (-V2)
or CPM2C-S
