Compatible Devices
Allen‑Bradley PLC‑5, SLC, and MicroLogix
Allen‑Bradley ControlLogix (INT, DINT, REAL data types only) [g3-df1dh485 | Word]
Verified Devices
SLC 5/03
MicroLogix 1500 [g3-df1dh485 | Word]
Excluded Devices
SLC 5/00 (via DH485) [g3-df1dh485 | Word]
Device Selection
Many PLC‑5 users may use the SLC device selection.
-
The PLC‑5 processor must support:
“protected typed logical write with three address fields” commands [g3-df1dh485 | Word]
Accessible Data
| **Prefix** | **Description** |
|---|---|
| O | Outputs ** |
| I | Inputs ** |
| S | Status |
| B | Bits |
| N | Integers |
| T | Timers |
| C | Counters |
| F | Floating Point |
| L | Long Word |
| R | String Area (80 characters) * – DF1 only |
* When mapping the String Area to arrays, use 80 characters per string
** SLC 5/00, 5/01, and 5/02 fixed I/O processors are not supported [g3-df1dh485 | Word]
Cable Information
RS‑232 (DF1 to SLC/PLC‑5)
Place Photo Here
- CBLAB001 – SLC 500 via DF1
- CBLAB002 – PLC‑5 via Channel 0 [g3-df1dh485 | Word]
RS‑485 (DH485 Network)
Place Photo Here
| **RLC RJ45 Pin** | **Signal** | **A‑B RJ45 Pin** | **Signal** |
|---|---|---|---|
| 1 | TxB | 1 | A |
| 2 | TxA | 2 | B |
| 3,8 | RxA | - | - |
| 4,7 | RxB | - | - |
| 5 | TxEN | 5 | TxEN |
| 6 | COMM | 7 | COMM |
- Cable: CBLAB003 – 10 ft [g3-df1dh485 | Word]
Generic RS‑232 Cable
Place Photo Here
- Cable: CBLGEN01 – 10 ft [g3-df1dh485 | Word]
Key Notes
- Supports both DF1 (serial) and DH485 (network) communications
- String support only available on DF1, not DH485
- Uses standard Allen‑Bradley data table addressing (O, N, T, etc.)
- Device compatibility depends heavily on processor capability and firmware support
Summary
This driver provides classic Allen‑Bradley communications using:
- DF1 → direct serial comms
- DH485 → networked PLC comms
👉 The main takeaway:
- If you need strings or simpler setup → use DF1
- If you need multi‑node network → use DH485, but expect limitations
© HMS Networks AB 2025