NI Serial Hardware Specifications and Features Guide ...

1 Specifications AND Features GUIDENI Serial HardwareThis document lists safety and compliance information for NI Serial Hardware , as well as physical Specifications , software Features , and recommended operating Supported Interfaces ..2 Serial Hardware 6 USB LED Descriptions ..7 Connectors and Pinouts .. 8DB-9 Male .. 810-Position Modular Jack (10P10C) .. 968-Pin Connector .. 10 Cables and Accessories .. 12RS-232, RS-422, and 13RS-232, RS-422, and RS-485 Features .. 13RS-232 Loopback .. 14RS-232 Signals ..14RS-485/422 Loopback .. 14RS-485/422 Signals .. 15RS-485 Topologies .. 15RS-485 transceiver Control ..16 UART Data Frame Example .. 16 Hardware Specifications .

2 17NI 9870 RS-232 C-Series 17NI 9871 RS-485 C-Series 20 PCI Serial Hardware .. 22 PCI Express Serial Hardware .. 28 PXI Serial 33 PXI Express Serial Hardware .. 39 USB Serial Hardware .. 44 ExpressCard Serial 472| |NI Serial Hardware Specifications and Features GuideNI- Serial Supported InterfacesThe PCI interfaces listed in Table 1 are universal cards which accept either or 5 1. PCI InterfacesPCI InterfacesStandard# PortsIsolatedMax Baud (kbaud)*Connector Type FIFO Size (Bytes)PCI-8430 DB-9 male128 PCI-8430/4RS-232 10P10C128 PCI-8430 68-pin SCSI128 PCI-8430 68-pin VHDCI128 PCI-8431/2RS-485/RS-4222 DB-9 male128 PCI-8431/4RS-485 10P10C128 PCI-8431/8RS-485 68-pin SCSI128 PCI-8432/2RS-2322Ye DB-9 male128 PCI-8432/4RS-2324Ye 10P10C128 PCI-8433/2RS-485/RS-4222Ye DB-9 male128 PCI-8433/4RS-485/RS-4224Ye 10P10C128* All NI Serial Hardware supports standard baud rates.

3 In addition, the PCI/NI PCIe/PXI-843x family of Hardware supports any baud rate from 2 baud up to the maximum supported baud rate for that interface . All baud rates are supported because the UART can get within percent of all baud rates in that range. Serial connector cables end in DB-9 male Serial connectors. The two-wire auto control mode for RS-485 transceiver control has a maximum baud rate of 2000 Serial Hardware Specifications and Features Guide | National Instruments|3 Table 2. PCI Express InterfacesPCI Express InterfacesStandard# PortsIsolatedMax Baud (kbaud)*Connector Type FIFO Size (Bytes)NI PCIe-8430 68-pin VHDCI128NI PCIe-8430 68-pin VHDCI128NI PCIe-8431/8RS-485 68-pin VHDCI128NI PCIe-8431/16RS-485 68-pin VHDCI128* All NI Serial Hardware supports standard baud rates.

4 In addition, the PCI/NI PCIe/PXI-843x family of Hardware supports any baud rate from 2 baud up to the maximum supported baud rate for that interface . All baud rates are supported because the UART can get within percent of all baud rates in that range. Serial connector cables end in DB-9 male Serial connectors. The two-wire auto control mode for RS-485 transceiver control has a maximum baud rate of 2000 3. PXI InterfacesPXI InterfacesStandard# PortsIsolatedMax Baud (kbaud)*Connector Type FIFO Size (Bytes)PXI-8430 DB-9 male128 PXI-8430 10P10C128 PXI-8430 68-pin SCSI128 PXI-8430 68-pin VHDCI128 PXI-8431/2RS-485 DB-9 male128 PXI-8431/4RS-485 10P10C128 PXI-8431/8RS-485 68-pin SCSI128 PXI-8432/2RS-2322Ye DB-9 male128 PXI-8432/4RS-2324Ye 10P10C1284| |NI Serial Hardware Specifications and Features GuidePXI-8433/2RS-485/RS-4222Ye s DB-9 male128 PXI-8433/4RS-485/RS-422 4Ye 10P10C128* All NI Serial Hardware supports standard baud rates.

5 In addition, the PCI/NI PCIe/PXI-843x family of Hardware supports any baud rate from 2 baud up to the maximum supported baud rate for that interface . All baud rates are supported because the UART can get within percent of all baud rates in that range. Serial connector cables end in DB-9 male Serial connectors. The two-wire auto control mode for RS-485 transceiver control has a maximum baud rate of 2000 4. PXI Express InterfacesPXI Express InterfacesStandard# PortsIsolatedMax Baud (kbaud)*Connector Type FIFO Size (Bytes)NI PXIe-8430 68-pin VHDCI128NI PXIe-8430 68-pin VHDCI128NI PXIe-8431/8RS-485 , **68-pin VHDCI128NI PXIe-8431/16RS-485 , **68-pin VHDCI128* All NI Serial Hardware supports standard baud rates.

6 In addition, the PXI/NI PXIe-843x family of Hardware supports any baud rate from 2 baud up to the maximum supported baud rate for that interface . All baud rates are supported because the UART can get within percent of all baud rates in that range. Serial connector cables end in DB-9 male Serial connectors. The two-wire auto control mode for RS-485 transceiver control has a maximum baud rate of 2000 kbaud.** For possible use with higher baud rates, refer to and search for KnowledgeBase 3. PXI Interfaces (Continued)PXI InterfacesStandard# PortsIsolatedMax Baud (kbaud)*Connector Type FIFO Size (Bytes)NI Serial Hardware Specifications and Features Guide | National Instruments|5 National Instruments considers the following baud rates to be standard.

7 NI Serial Hardware supports these rates up to the maximum rate specified. Your device may also support additional baud rates not listed below:3002400144005760046080060048001920 01152001200960038400230400 To set the baud rate, set the VISA Baud attribute or use the Windows SetCommState function and pass the actual value of the baud rate in the BaudRate field of the DCB to Hardware Specifications for supported baud rates on each 5. USB InterfacesUSB InterfacesStandard# PortsIsolated Max Baud (kbaud)*Connector TypeFIFO Size (Bytes) DB-9 male128 USB-232 DB-9 male128 USB-232 DB-9 male128 USB-485RS-485 DB-9 male128 USB-485/2RS-485 DB-9 male128 USB-485/4RS-485 DB-9 male128* All NI Serial Hardware supports standard baud rates.

8 In addition, the PCI/NI PCIe/PXI-843x family of Hardware supports any baud rate from 2 baud up to the maximum supported baud rate for that interface . All baud rates are supported because the UART can get within percent of all baud rates in that 6. ExpressCard InterfacesExpressCard InterfacesStandard# PortsIsolatedMax Baud (kbaud)*Connector TypeFIFO Size (Bytes)NI ExpressCard-8420/2RS-232 DB-9 male128NI ExpressCard-8421/2RS-485 DB-9 male128* All NI Serial Hardware supports standard baud rates. In addition, the PCI/NI PCIe/PXI-843x family of Hardware supports any baud rate from 2 baud up to the maximum supported baud rate for that interface .

9 All baud rates are supported because the UART can get within percent of all baud rates in that | |NI Serial Hardware Specifications and Features GuideSerial Hardware FeaturesTo determine which Features your product supports, refer to the following 7. Serial Hardware FeaturesHardwareAdjustable FIFO SettingsGet interface Type RS-485 transceiver Control RS-485 Socketed Bias ResistorsRS-485 Program-matically Controlled Bias ResistorsRS-232 transceiver StateRS-232 DTE/DCE transceiver ControlHardware Implemented Flow Control RTS/CTSDTR/DSRXon/XoffPCI/NI PCIe/PXI/NIPXIe-8430, PCI/PXI-8432 PCI/NI PCIe/PXI/NI PXIe-8431eight port and NI PXIe/NI PCIe-8431 16 port All other PCI/PXI-8431 and PCI/PXI-8433 USB-232 one port USB-232 two and four port USB-485 one port NI Serial Hardware Specifications and Features Guide | National Instruments|7 USB-485 two and four port NI ExpressCard-8420 NI ExpressCard-8421 Table 7.

10 Serial Hardware Features (Continued)HardwareAdjustable FIFO SettingsGet interface Type RS-485 transceiver Control RS-485 Socketed Bias ResistorsRS-485 Program-matically Controlled Bias ResistorsRS-232 transceiver StateRS-232 DTE/DCE transceiver ControlHardware Implemented Flow Control RTS/CTSDTR/DSRXon/Xoff8| |NI Serial Hardware Specifications and Features GuideUSB LED DescriptionsThe USB Serial two and four-port Hardware uses bicolor LEDs to indicate device and port status. Table 8 describes these LEDs; Figure 1 shows their 1. USB- Serial Hardware LEDsConnectors and PinoutsDB-9 MaleFigure 2. DB-9 Connector Pin LocationsTable 8. USB LEDsLEDD escription ReadyDim Red Powered, but not connected to USB (self-powered USB only)Red Powered and connected to USB, but not fully configuredYellow Device is ready (normal operation)Blinking Red or Red-Yellow Device error.