VME Communication Advme1525
VME bus expander (Slave)
The Advme1525 is a bus expander board that can be used in the slave side. It is used in combination with the Advme1524 in order to expand the number of slots in a system. Daisy-chain connections allow overall cable length to be extended to 30m and up to 16 slave boards to be connected to one master.
It is a VME bus expander slave board can be used in combination with the Advme 1524 board (master board) to expand the number of VME bus slots.
It bridges the read/write cycle and interrupt acknowledge cycle of the VME bus on the master side to the VME bus on the slave side.
There is a bus arbiter function and a bus master function, so there is no need for a CPU board or similar component on the slave side.
It supports bus cycles for 16-bit data buses and 24-bit address buses, and is ideal when there is the need to expand the number of slots in a system that uses a large number of DI, DO, AI, AO and other I/O boards.
It can be used to expand the number of VME bus slots.
Daisy-chain connections
Daisy-chain connections can be created and this allows I/O boards to be distributed to multiple VME racks.
Daisy-chain connections allow overall cable length to be extended to 30m, and up to 16 slave boards can be connected to one master board.
Inserting an I/O board with an interrupter function into the slot on the slave side enables the execution of an interrupt process with the CPU board on the master side.
A setting can be specified so that only interrupt requests of a certain level are sent to the master board.
| Architecture: | • VME compliant |
| Signal System: |
• RS-485 multidrop • interrupt request line only RS-485 point-to-point daisy chain |
| CPU: | • |
| Memory: | • |
| DeviceNet/CAN: | • |
| Serial Ports: | • |
| GP-IB Controller: | • |
| Pulse Input: | • |
| External Gate Signal: | • |
| Internal Gate Signal: | • |
| Operation Mode: | • |
| Number of channels: | • |
| Pulse Output: | • |
| Encoder Input: | • |
| Motor Driver Input: | • |
| General Purpose Input: | • |
| General Purpose Output: | • |
| Limit Sensor Input: | • |
| Pulse rate: | • |
| Connector: | • 80-pin half-pitch connector |
| Pulse Controller: | • |
| Interpolation Functions: | • |
| General Purpose Digital Output: | • |
| General Purpose Digital Input: | • |
| Transmission Method: | • Parallel, Multiplex, Source synchronous forwarding |
| Input Voltage: | • Up to 7V |
| Maximum Number of Boards Connectable: | • Up to 16 Advme1525 boards can be connected to one Advnme1524 board |
| Maximum Overall Cable Length: | • Up to 30m |
| Number of Actual Signals: | • 39 pairs |
| Cable: | • Two 20 pair flat-ribbon type twisted cables |
| Termination: |
• 130Ohms (only required for last slave board) • Terminator board available in daughter board format (Advme1524-TERM) |
| Bus Floating: | • |
| Power-down Process: | • Power up/down information received from Advme1524 board to control receiver |
| Synchronous Clock Settings: | • 125ns, 250ns, 500ns or 1µs selectable by jumper pin |
| Bus Interface: |
• VME bus • Width complies with A24/A16 D16/D08 (EO) Rev.C.3 |
| RoHS: | • Lead-free |
| Power Supply: | • Single +5V DC |
| Power Consumption: | • |
| Mechanical: |
• Dimensions: 6U – 262 x 160 mm (10.31” x 6.30”) • Pitch: Single slot – 20.02mm (0.79”) • Weight: 270g |
| Operating Systems Supported: | • |
• Industrial
• Medical
• Transportation
• Defense
