
1-5
1.2.2 Slave Stations (Slave Unit, I/O Terminal, I/O Terminal Board, etc)
The I/O that is controlled by the master station (CPU unit and master unit) on the remote I/O system
[MEWNET-F] is called
slave stations
. A maximum of 32 stations can be connected per master unit, and
up to 4096 points of I/O can be controlled.
- Slave stations can be mixed. The FP3 system or exlusive I/O terminals are also controlled as slave
stations. There is not restriction on the order of connection and the composition ratio.
-
Staton numbers
are set to each slave station.
I/O numbers
are allocated in the order of station
numbers. It is not neccesary to set station numbers according to the order from the unit closer to the
master unit. Also, it is no problem there are blanks.
Overview of slave stations
-FP2/FP3 system (Slave station system)
This is the system with a slave unit installed in the CPU slot of the master backplane instead of a CPU
unit as "Slave station control part" shown above. (Note1, Note3) An advanced unit (Note2) can be used
as "I/O part" as well as I/O unit.
"Shared memory access function" is also available.
Note1) I/O can be added by connecting expansion backplane as well as the standard system. Up to 3
backplanes including a master backplane can be added.
Each length of expansion cables should not be longer than 1.2 m each for FP3, and 2.6 m
totally for FP2.
Note2) There are some advanced units which cannot be used for the slave station system.
Reference:
<1.2.3 Advanced Units Not to be Used for Slave Station System of “MEWNET-F”>
Note3) The system cannot be controlled only by the slave unit without a master station.
-FP I/O Terminal Unit
As the [MEWNET-F] FP terminals, there are an I/O terminal board that the input and output are
combined and an I/O terminal unit (Note) that the input and output are separate. The "Slave station
control part" and "I/O part" shown in the above figure is contained in a single unit.
Note) There are an input unit and output unit for the I/O terminal unit. Also, number of controllable points
can be incrased or the input and output can be combined by connecting expansion units.
-FP0/FP1/FP-M & I/O Link Unit
The connection to the [MEWNET-F] network can be established by connecting the I/O link unit to
FP0/FP1/FP-M The I/O of FP0/FP1/FP-M cannot be directly controlled by the master station, however,
the I/O link area input of FP0/FP1/FP-M can be controlled with FP3 programs, or the remote I/O area
input of FP3 can be controlled with FP0/FP1/FP-M programs.
Reference:
<Chapter 11, Chpater 12 (Appendix) I/O Link>
Summary of Contents for MEWNET-F
Page 9: ...Chapter 1 Functions and Restrictions of the Unit ...
Page 19: ...Chapter 2 Part Names and Functions ...
Page 40: ...2 22 ...
Page 41: ...Chapter 3 Unit Specifications ...
Page 52: ...3 12 ...
Page 53: ...Chapter 4 Installation and Wiring ...
Page 62: ...4 10 ...
Page 63: ...Chapter 5 Connection for the Remote I O System ...
Page 75: ...Chapter 6 Remote I O Map ...
Page 84: ...6 10 ...
Page 85: ...Chapter 7 Operation Modes for Controlling MEWNET F ...
Page 97: ...Chapter 8 Control by MEWNET F ...
Page 108: ...8 12 Flowchart ...
Page 110: ...8 14 ...
Page 111: ...Chapter 9 Troubleshooting ...
Page 120: ...9 10 ...
Page 121: ...9 11 9 5 2 When the ALARM LED is ON ...
Page 122: ...9 12 9 5 3 When the Communication LED on the Master Unit does Not Flash Normally ...
Page 123: ...9 13 When the COMM LED is OFF ...
Page 124: ...9 14 When the COMM LED is ON ...
Page 125: ...9 15 9 5 4 When the Communication LED on a Slave Station does Not Flash Normally ...
Page 126: ...9 16 When the COMM LED is OFF ...
Page 127: ...9 17 When the COMM LED is ON ...
Page 128: ...9 18 9 5 5 When the CPU does Not Operate ...
Page 129: ...9 19 9 5 6 When the Input Output Function of a Slave Station does Not Work ...
Page 130: ...9 20 9 5 7 When the Memory Access Function for the Advanced Unit s Memory does Not Work ...
Page 134: ...9 24 ...
Page 135: ...Chapter 10 Dimensions ...
Page 136: ...10 2 10 1 FP2 Multi wire Link Unit AFP2720 10 2 FP3 Remote I O Master Unit AFP3742 ...
Page 137: ...10 3 10 3 FP2 Remote I OSlave Unit AFP2745 10 4 FP3 Remote I OSlave Unit AFP3745 ...
Page 141: ...10 7 10 8 FP0 I O Link Unit AFP0732 ...
Page 142: ...10 8 ...
Page 143: ...Chapter 11 Appendix 1 I O Link With FP1 ...
Page 147: ...11 5 11 3 Part Names and Functions ...
Page 159: ...Chapter 12 Appendix 2 I O Link With FP0 ...
Page 164: ...12 6 ...
Page 166: ......
Page 167: ......
Page 168: ...FAF 35E 1 200803 http www mew co jp ac e fasys 2008 ...