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JTEKT Toyopuc PC10G controllers over Ethernet
- Name: Toyopuc
- Version: 1.0.0.0
- Protocol: Computer Link (binary, Ethernet)
- Interface: TCP/IP
- Runtime: Multiplatform
- Configuration:
- Devices / Protocols
Overview
The Toyopuc driver reads and writes controller registers on JTEKT Toyopuc PC10G devices using the Computer Link protocol over the controller built-in Ethernet port. Communication blocks are dynamically created according to the polling cycle defined on the AccessType for each Device Point.
The driver addresses data registers, link registers, present-value and special registers, the relay areas at word granularity, and the expansion data register area. Individual programs on a multi-program controller can be addressed explicitly.
This connector uses the binary command set of the Ethernet port. It is not the ASCII frame used by the RS-422 serial Computer Link, which is a separate protocol on the same controller family.
Controller Configuration
Before connecting, the controller built-in Ethernet port must be configured in PCWin with an IP address and a listening port:
- Own Node IP Address: the IP address the driver will connect to.
- Own Node Port No.: the TCP port the controller listens on.
- Open Protocol: the connection must be set to a TCP passive open so the controller accepts the incoming connection.
A connection configured as a non-specified passive open accepts one client at a time. If another node is already connected on that port, the existing connection is reset.
Channel Configuration
Protocol Options
- BlockSize: maximum bytes per request, two bytes per word. Default is 240, which is 120 words. The protocol limit is 1024 bytes (512 words).
- TraceFrames: when enabled, every transmitted and received frame is written to the Trace Window as hexadecimal. Intended for diagnostics. Default is false, and it should be left disabled in production.
Node Configuration
Station Configuration
Station syntax: <IP address> ; <Port number>
Where:
- <IP address>: IP address of the controller built-in Ethernet port, matching Own Node IP Address in PCWin.
- <Port number>: TCP port the controller is listening on, matching Own Node Port No. in PCWin.
E.g.: 192.168.1.10; 2000
This protocol carries no station number, so the node requires only the address and port.
Points Configuration
The syntax for the Toyopuc communication points is: <Scope>:<Area>:<Address>
Where:
- <Scope>: selects which program the address belongs to. Optional. When omitted the point resolves to Own.
- <Area>: the controller memory area.
- <Address>: the word offset within the area, written in hexadecimal, exactly as displayed in PCWin.
Scope
Scope | Description |
|---|---|
Own | The program selected by the controller link parameters. Default, and the most efficient option. |
P1 | Program 1, addressed explicitly. |
P2 | Program 2, addressed explicitly. |
P3 | Program 3, addressed explicitly. |
On a controller running a single program, Own and the matching program scope return the same data. Scope is ignored when the area is U, which is shared rather than per-program.
Memory Areas
Area | Description | Address range (hex) |
|---|---|---|
D | Data register | 0 to 2FFF |
R | Link register | 0 to 7FF |
N | Present value register | 0 to 1FF |
S | Special register | 0 to 3FF |
M | Internal relay, word access | 0 to 7F |
XY | Input and output relay, word access | 0 to 7F |
L | Link relay, word access | 0 to 7F |
T | Timer and counter, word access | 0 to 1F |
V | Special relay, word access | 0 to F |
K | Keep relay, word access | 0 to 2F |
U | Expansion data register | 0 to FFFF |
The relay areas are accessed one word at a time, matching the word-address notation used by PCWin. A relay word address shown as M20W in the programming software is written as M:20 here.
Examples
Address | Reads |
|---|---|
D:0 | Data register D0000 in the link-parameter program |
D:100 | Data register D0100, hexadecimal offset |
P1:D:160 | Data register D0160 in program 1 |
P2:R:0 | Link register R0000 in program 2 |
M:20 | Internal relay word M20W |
U:106 | Expansion data register U0106 |
Troubleshooting
When a request is rejected, the controller returns an error code that is written to the Trace Window together with its description. The most frequently seen codes are:
Code | Meaning | Usual cause |
|---|---|---|
0x40 | Address, or address plus data count, out of range | The point address exceeds the area, or a block runs past the end of the area. Check the address range table above. |
0x41 | Word or byte count out of range | BlockSize is larger than the controller accepts. Reduce it. |
0x34 | Access prohibited by configuration | The controller is configured to deny access to that area. |
0x31 | Write prohibited during sequence operation | A write was attempted against a region the running program protects. |
If no reply is received at all, confirm the controller port is open and that no other client is holding the connection.
Enable TraceFrames on the channel to capture the exact bytes exchanged when reporting a communication problem.
Driver Revision History
Toyopuc Revision History | |
|---|---|
Version | Notes |
1.0.0.0 | Initial release. Word read and write over the Ethernet Computer Link binary command set, with per-program scope and expansion data register support. |