Chapter 9: Message transfers
[5]
In order to communicate with the Ethernet on a different layer, use the following information in the communication format header (see page
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0 |
| 00(H) |
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| 00(H) |
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| PSA |
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| PDA |
| Ethernet |
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| PSA |
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| FT0 | PC |
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| PO0 | 40 bytes |
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| EA1 | PDA | PO0 |
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| FT1 |
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39 |
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40 |
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- When making a | |||||
including the source, transit stations, and destination, and slot number (i.e. designating the communi- |
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cation path). The |
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ing a module on the Ethernet, a station number for the |
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referred to as a pseudo station number. |
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(a) PDA | : Pseudo destination address |
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| Designate the station number of |
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| may be any value within the range of 1 to 254 that can be discriminated from other |
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| equipment on the Ethernet. |
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(b) PSA | : Pseudo source address |
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| Designate the station number for the equipment sending the command. This may be |
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| any value within the range of 1 to 254 that can be discriminated from other |
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| equipment on the Ethernet. |
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| With respect to the response, the pseudo target station number that is given by the |
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| command will be set. |
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(c) FT0 | : Frame type 0 |
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| Designate 60(H). |
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(d) PO0 | : Transit slot number |
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| Designate the slot number on the transit station PC that the |
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| 20FL5/20FLT is installed on. This number is 2, 3 ... up to 7 from the next position of |
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| the control module (in case |
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(e) EA1 | : End target station address |
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| Designate the end target station address 1 to 254 on the |
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(f) FT1 | : Frame type 1 |
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| Set the 40(H). |
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(g) Command line : Command/response line