Introduction
All Maple Systems HMIs programmed with EBPro (EasyBuilder Pro), including every cMT X Series and cMT Series model, are compatible with the Memory Map protocol. Configure your Controller and HMI/cMT with the following parameters to establish reliable communication.
Overview
Memory Map protocol is similar to IBM 3764R communication protocol. EBPro (EasyBuilder) reserves 512 words of data memory to use with this protocol. EBPro (EasyBuilder) must update the values in these words. EBPro (EasyBuilder) uses these words to display data and control parts status on screen. When touch actions are taken, data is sent to the others once, and then update the memory in it. The HMI should always update the data memory.
HMI Settings
| Parameters | Recommended | Options | Notes |
|---|---|---|---|
| PLC type | Memory Map | ||
| PLC I/F | RS232 | RS232, RS485 4W, 2W | RS232 default |
| Baud rate | 115200 | 9600~115200 | |
| Data bits | 8 | ||
| Parity | Even | Even, Odd, None | |
| Stop bits | 1 |
Device Address
| Bit/Word | Device Type | Format | Range | Memo |
|---|---|---|---|---|
| B | MB | DDDDh | 0 ~ 4095f | |
| W | MW | DDDD | 0 ~ 9999 |
MB and MW share the same data storage.
MW 0 = MB 00000 ~ MB 0000f, MW 1 = MB 00010 ~ MB 0001f
Wiring Diagrams
NOTE: The serial port pin assignments may vary between HMI models.
Diagram 1: RS-232
| HMI | Direction | PLC |
|---|---|---|
| Pin assignments | RS232 9P D-Sub Female | |
| Rx | ↔ (bidirectional) | 3 |
| Tx | ↔ (bidirectional) | 2 |
| GND | ↔ (bidirectional) | 5 |
Diagram 2: RS-485 2W
| HMI | Direction | PLC |
|---|---|---|
| Pin assignments | RS485 2W 9D-Sub Male | |
| Data- | ↔ (bidirectional) | 1 |
| Data+ | ↔ (bidirectional) | 2 |
| GND | ↔ (bidirectional) | 5 |
Diagram 3: RS-485 4W
| HMI | Direction | PLC |
|---|---|---|
| Pin assignments | RS485 4W 9P Male | |
| Rx- | ↔ (bidirectional) | 3 |
| RX+ | ↔ (bidirectional) | 4 |
| Tx- | ↔ (bidirectional) | 1 |
| Tx+ | ↔ (bidirectional) | 2 |
| GND | ↔ (bidirectional) | 5 |