MULTIPORT ELECTRONIC CONTROLLER continued...
D.COMMUNICATIONS
1.ASCII BASED
The standard communications protocol for the MEC uses a simple ASCII format which connects the host device (computer, RTU or PLC) through jumper selectable connection. Refer to board drawing on page 18 for the jumper location, jumper ‘A’ for
The external host device sends commands through a
NOTE: | In the following table the '<cr>' is the ASCII character #13 (0x0d). | |||
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| ?<cr> |
| Request status | |
| apo<cr> | Response where: | ||
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| a = | 'R' for REMOTE selector setting, or |
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| 'J' for JOG selector setting, or |
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| 'S' for STEP selector setting |
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| p = | position '1' to '8' |
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| o = | 'O' for 'on' position, or |
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| 'F' for 'off' position |
| !p<cr> | Go to position where: | ||
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| p = | position '1' to '8' |
| a<cr> |
| Response where: | |
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| a = | 'R' for REMOTE selector setting, or |
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| 'J' for JOG selector setting, or |
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| 'S' for STEP selector setting |
| $pt<cr> | Write valve position message where: | ||
| t<cr> |
| p = | position '1' to '8' |
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| t = | text message up to 16 characters |
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| #<cr> |
| Request status using 'text' response | |
| t<cr> |
| Response where: | |
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| t = | text message for position of valve |
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| @<cr> | Request list of disabled positions | ||
| dddddddd<cr> | Response where: | ||
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| d = | number of active position '1' to '8' |
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| (if a position is disabled, a |
| *h<cr> | Set the Home position | ||
| a<cr> |
| Response where: | |
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| a = | 'R' for REMOTE selector setting, or |
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| 'J' for JOG selector setting, or |
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| 'S' for STEP selector setting |
Optional software is available for personal computers in DOS, Windows 3.11, or Windows 95 versions.
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