Driver Manual |
Address | Switches | Address | Switches | Address | Switches | |
14 | 0 0 1 1 0 1 | 36 | 1 0 0 0 1 1 | 58 | 1 1 1 0 0 1 | |
15 | 0 0 1 1 1 0 | 37 | 1 0 0 1 0 0 | 59 | 1 1 1 0 1 0 | |
16 | 0 0 1 1 1 1 | 38 | 1 0 0 1 0 1 | 60 | 1 1 1 0 1 1 | |
17 | 0 1 0 0 0 0 | 39 | 1 0 0 1 1 0 | 61 | 1 1 1 1 0 0 | |
18 | 0 1 0 0 0 1 | 40 | 1 0 0 1 1 1 | 62 | 1 1 1 1 0 1 | |
19 | 0 1 0 0 1 0 | 41 | 1 0 1 0 0 0 | 63 | 1 1 1 1 1 0 | |
20 | 0 1 0 0 1 1 | 42 | 1 0 1 0 0 1 | 64 | 1 1 1 1 1 1 | |
21 | 0 1 0 1 0 0 | 43 | 1 0 1 0 1 0 |
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22 | 0 1 0 1 0 1 | 44 | 1 0 1 0 1 1 |
| * = default | |
Table 2: Summary of Modbus Data Access Commands |
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Function Code (Decimal) | Command Name |
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| ||
1 |
| Read Discrete Output Status (0xxxx) |
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2 |
| Read Discrete Input Status (1xxxx) |
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3 |
| Read Output Register (4xxxx) |
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| |
4 |
| Read Input Register (3xxxx) |
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| |
5 |
| Force Single Coil (0xxxx) |
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| |
6 |
| Preset Single Register (4xxxx) |
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|
| |
15 |
| Force Multiple Coils (0xxxx) |
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| |
16 |
| Preset Multiple Registers (4xxxx) |
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Modbus Plus Card Indicators
The Modbus Plus card has an indicator that flashes a repetitive pattern to show its network communication status, plus two indicators which identify communication errors on the two Modbus Plus cable paths. Note that one error indicator will be lit normally in single
Table 3: Modbus Plus Active Indicator Patterns
Indicator Pattern (Green) | Status |
Six flashes/second | Normal operating state. All nodes on a healthy |
| network flash this pattern |
One flash/second | The node is |
| seconds, the node attempts to go to its normal |
| operating state. |
Two flashes, then OFF for 2 | The node detects the network token being passed |
seconds | among other nodes, but it never receives the |
| token. |
Three flashes, then OFF for | The node does not detect any token passing on the |
1.7 seconds | network. |
Four flashes, then OFF for | The node has detected another node using the |
1.4 seconds | same address. |
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