Compact operator interface for RS-232 controller links
Allen-Bradley 2707-M232P3 DTAM Micro Operator Interface with RS-232 Port
Two-line display, sealed keypad and point-to-point PLC-5, SLC or MicroLogix communication.
Product Description
Compact local messages and data entry are provided by the Allen-Bradley 2707-M232P3 DTAM Micro operator interface. Its communication port is the RS-232 version of the DTAM Micro family.
Point-to-point links are supported to PLC-5 Channel 0 using DF1, to SLC 5/03, 5/04 and 5/05 serial ports using DH-485 protocol, and to MicroLogix 1000 with the specified cable arrangement. RS-232 distance is limited to 50 ft (15 m).
The 2707-M232P3 presents two lines of 20 characters on a yellow-green backlit LCD and uses a sealed tactile keypad for screen navigation, numeric entry, security and special controller functions.
Technical Specifications
| Technical Item | 2707-M232P3 |
|---|---|
| Brand | Allen-Bradley |
| Product Type | DTAM Micro RS-232 operator interface |
| Brand Country | United States |
| Display | 2 lines × 20 characters |
| Character Size | 4.75 × 2.95 mm |
| Keypad Life | 1 million operations |
| Communication Port | RS-232 |
| RS-232 Distance | 15 m maximum |
| Input Voltage | 18…30 V DC |
| Input Current | 200 mA maximum |
| Dimensions (H × W × D) | 99.1 × 137.2 × 45.7 mm |
| Weight | 0.45 kg maximum |
| Operating Temperature | 0…55 °C |
| Relative Humidity | 5…95%, noncondensing |
RS-232 Controller Compatibility
Match protocol and cable to the controller port
- PLC-5 Channel 0 uses an RS-232 DF1 connection with the port configured for the required protocol.
- SLC 5/03, 5/04 and 5/05 serial ports use the documented DH-485 arrangement over 1747-CP3.
- A MicroLogix 1000 connection uses the specified 2707-NC10 cable arrangement.
- Keep point-to-point RS-232 cable length within 15 m and match baud, parity and addressing at both devices.
Operator Screens, Security & Data Entry
Build controlled interaction instead of an unrestricted data window
- Application screens can display data, accept values, show alarms and organize main or submenus.
- Security codes restrict selected screens or functions when the application requires controlled access.
- The tactile keypad supports numeric entry, navigation and special controller-file functions.
- Test every write target and limit so an operator entry cannot place an invalid value into the controller.
Frequently Asked Questions
Why will 2707-M232P3 not communicate with an SLC 5/04 even though both connectors are RS-232?
The physical connector is only one part of the link; the SLC port must use the documented DH-485 protocol settings and correct 1747-CP3 wiring. Match baud and other communication parameters at both ends before replacing hardware.
Can 2707-M232P3 be installed 30 m from the controller on RS-232 cable?
No; the documented RS-232 distance is 50 ft or 15 m maximum. Move the interface or redesign the communication method rather than relying on an out-of-spec cable run.
Why does 2707-M232P3 power up in transfer mode instead of running the operator application?
Check DIP switch position 1 and the documented upload/download setting. Return the switch to the operating position after a verified transfer and reset the unit according to the procedure.
How can unwanted value changes from 2707-M232P3 be prevented?
Apply screen security, limit the writable controller addresses and configure valid data-entry ranges in the application. Test cancel, timeout and error paths so an incomplete entry does not write an unsafe value.
What should be checked when the 2707-M232P3 display is visible but the keypad seems unresponsive?
Confirm the application screen expects keypad input and check DIP-switch functions that can disable entry. Run the keypad diagnostic and inspect the sealed membrane for damage only after configuration causes are excluded.
Which details should be saved before replacing 2707-M232P3?
Preserve the application file, operating-system compatibility, DIP-switch positions, communication parameters, cable catalog and controller channel settings. After installation, test every screen link, write field, alarm and security path with the machine controlled.
Customer Service Network
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Send the complete part number and quantity so the requested variant remains clear from enquiry through quotation.
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