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Aperçu
The SDM-SIO4 is a legacy product and should be purchased only as a replacement or for use with legacy data loggers such as the CR10X. When considering the purchase of an SDM-SIO4, first consider using the SDM-SIO1 instead. Please note that the SDM-SIO4 is not compatible with all data loggers.
Primarily for legacy data loggers, the SDM-SIO4 adds serial I/O capacity and flexibility. It has four serial ports that communicate with serial sensors, display boards, printers, and other serial devices. After being programmed, the SDM-SIO4 communicates with connected devices in parallel with the data logger's own program sequence.
Lire la suiteAvantages et caractéristiques
- Fournit quatre ports configurables série en RS-232
- Un système d'exploitation multitâche autorise la transmission et la réception des données sur tous les ports simultanément.
Images
Description technique
The SDM-SIO4 is a legacy product and should be purchased only as a replacement or for use with legacy data loggers such the CR10X. When considering the purchase of an SDM-SIO4, first consider using the SDM-SIO1 instead. Please note that the SDM-SIO4 is not compatible will all data loggers.
Spécifications
| Communication Rate | Speed at which data is transferred is controlled by the data logger and can vary with the microprocessor activity as well as the length of the SDM cables. |
| Typical Transfer Rate | One byte per millisecond |
| Power Supply | Unregulated 12 V supply, 9 to 18 Vdc |
| Internal Battery | Retains configuration information only. (Lithium battery has an estimated life of 10 years.) |
| Number of Ports | 4 (independently configurable for different serial data formats) |
| Serial Ports Baud Rate | 25 to 115,200 bps |
| Port Output |
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| Port Configuration | 9-pin D connectors |
| Data Flow Control | By data logger or SDM-SIO4, if required, using hardware or software protocols |
| Onboard Diagnostics | Built-in system watchdog resets the processor in the event of a crash caused by transients and a built-in LED gives an indication of SDM-SIO4 status on power-up. |
| Input Voltage Limits | ±25 V |
| Operating Temperature Range | -25° to +50°C |
| Dimensions |
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| Weight | 499 g (1.1 lb) |
Current Drain |
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| All Ports Active | 40 mA |
| Quiescent | 0.7 mA (quiescent state entered if there is no SDM or port activity for ~30 ms) |
Buffers (each port) |
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| Type | Fill & stop (Once filled, additional data received is lost.) |
| Receive (Rx) | 981 bytes + 16-byte hardware buffer |
| Transmit (Tx) | 981 bytes + 16-byte hardware buffer |
| Processed Data Storage | 891 bytes (suitable for storing 224 4-byte Campbell Scientific floating point values) |
| Floating Point Buffer | Used only when the data logger outputs floating point data via the SDM. This buffer is 241 bytes—sufficient for 60 floating-point values. |
Compatibilité
Veuillez noter : Ce qui suit montre des informations de compatibilité générales. Ce n'est pas une liste complète de tous les produits compatibles.
Centrale de mesure
| Produits | Compatibilité | Note |
|---|---|---|
| CR1000 (obsolète) | Although the SDM-SIO4 is technically compatible with the CR1000, Campbell Scientific recommends using one or more of the SDM-SIO1 instead. | |
| CR200X (obsolète) | ||
| CR216X (obsolète) | ||
| CR3000 (obsolète) | Although the SDM-SIO4 is technically compatible with the CR3000, Campbell Scientific recommends using one or more of the SDM-SIO1 instead. SDMs are connected to the ports labeled SDM-C1, SDM-C2, and SDM-C3. |
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| CR5000 (obsolète) | SDMs are connected to the ports labeled SDM-C1, SDM-C2, and SDM-C3. | |
| CR6 | ||
| CR800 (obsolète) | Although the SDM-SIO4 is technically compatible with the CR800, Campbell Scientific recommends using one or more of the SDM-SIO1 instead. | |
| CR850 (obsolète) | Although the SDM-SIO4 is technically compatible with the CR850, Campbell Scientific recommends using one or more of the SDM-SIO1 instead. | |
| CR9000X (obsolète) | SDMs connect to ports provided on the CR9032 CPU module. |
Equipement de montage
| Produits | Compatibilité | Note |
|---|---|---|
| ENC10/12 | ||
| ENC12/14 | ||
| ENC14/16 | ||
| ENC16/18 | ||
| ENC24/30 | ||
| ENC24/30S |
Acquisition de données distribuées
| Produits | Compatibilité | Note |
|---|---|---|
| GRANITE 10 | ||
| Granite 6 | ||
| Granite 9 |
Informations de compatibilité supplémentaires
Note: Future data loggers may not support the SDM-SIO4, and therefore it is only recommended for existing networks that already contain this interface.
Data Logger Considerations
Programming
The SDMSIO4 Instruction controls the SDM-SIO4 operation in CRBasic. Instruction 113 controls SDM-SIO4 operation in Edlog (a Library Special PROM may be required in older data loggers).
Power Requirements
Because of the minimal current drain (0.7 mA quiescent, 40 mA with all four ports active), the SDM-SIO4 is typically powered directly from the data logger. A supplementary power supply may be required for some applications, especially where more than one SDM is operated by a single data logger.
Enclosure Considerations
The SDM-SIO4 requires a desiccated, non-condensing environment; a Campbell Scientific enclosure is recommended. The SDM-SIO4's case has mounting flanges for attachment to the 1"-on-center hole grid of Campbell Scientific enclosures. Grommets and screws are provided to attach the flanges to the backplate of our enclosures.
Documents à télécharger
Brochures
Vidéos & Tutoriels
FAQ
Nombre de FAQ au sujet de(s) SDM-SIO4: 5
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The battery is a CR2032 button cell lithium battery that is user replaceable. However, after the case is opened, proper ESD (electrostatic discharge) protection is required.
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Load the string to a buffer in the SDM-SIO4, and issue the command to send the string. For details, see the SDM-SIO4 Instruction Manual.
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Oui c'est possible en utilisant 4 SDM-SIO1.
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It depends. It is possible to connect serial sensors to a datalogger without the use of an SDM-SIO4. However, if the sensors require hardware flow control or true RS-232 voltage levels, an SDM-SIO4 may be needed. The SDM-SIO1 also works with RS-485 signals and is a preferred alternative to the SDM-SIO4.
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La CR1000 peut gérer des chaînes de caractère comme un type de données spécifique. Il a intégré des capacités de communication série sur le 1) quatre paires de ports de contrôle COM1 (C1 Tx / C2 Rx) à COM4 (C7 Tx / C8 Rx), 2) port RS-232, et 3) port CSI / O avec le dispositif d'interface approprié. Les capacités de série I / O de la CR1000 sont similaires et sont plus rapides que celles du SDM-SIO4 sur une CR10X ou une CR23X. Les modules SDM sont adressables et sont reliés à une centrale d’acquisition sur les ports C1-C3. Par conséquent, l'un des avantages de l'utilisation de plusieurs périphériques SDM sur un enregistreur de données CR1000 est que seuls trois ports de contrôle seront utilisés.