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M4RTU/M4 I/O User’s Guide
INSTALLATION AND SETUP
EEPROM/RAM Jumper (E/R)
Use this jumper to choose the source of the M4RTU/M4 I/O’s control program. When the jumper is in
(the default), the control program will run from RAM; when the jumper is out, the control program is copied from
Flash EEPROM into RAM and run from RAM.
Normally, application programs are downloaded from your PC workstation to battery-backed CMOS RAM in the
M4RTU/M4 I/O. The programs are then executed from RAM. Unless application programs are stored in Flash
EEPROM, the E/R jumper should be installed to allow the control program in RAM to run.
Autoboot Jumper (AUTO)
Use this jumper to determine whether autoboot mode will be enabled (jumper in) or disabled (jumper out,
the default).
When autoboot mode is enabled, at power-up the M4RTU/M4 I/O automatically executes the resident user
program (RAM or Flash). Otherwise, it waits to receive a command to run the resident program.
Communication Mode Jumper (X0)
Use this jumper to select whether communication between the host computer and the controller will be in
binary mode (jumper in, the default) or ASCII mode (jumper out). Generally, ASCII mode is used in applications
requiring a modem. For ARCNET or Ethernet this jumper is ignored. For more detailed information, refer to the
OptoControl Command Reference Manual — Communications Overview.
Boot Loader Jumper (X1)
Use this jumper to set the controller to either boot to the downloaded kernel (jumper in, the default) or boot to
loader (jumper out). This jumper should always remain in place for normal operations. For more information,
see Appendix A (Troubleshooting).
Host Port Jumpers (H0, H1)
Use these jumpers to determine the primary host port used by the M4RTU/M4 I/O upon power-up or reset.
Select from COM0 (both jumpers in, the default), COM1 (H0 jumper out, H1 jumper in), ARCNET (H0 jumper in,
H1 jumper out), or Ethernet (both jumpers out).
COM0 is dedicated for RS-232 communications and COM1 is dedicated for RS-485 communications. Select
ARCNET only if an optional M4SARC, M4SARCF, or M4SARCFR ARCNET expansion card is installed. Select
Ethernet only if an optional M4SENETU or M4SENETC expansion card is installed.
Baud Rate Jumpers (BAUD 0–3)
Use these jumpers to set the baud rate for the host serial port (COM0 or COM1) on power-up or reset. Select the
appropriate jumper settings based on the baud rates in Table 3-2. (These baud rates also appear on the sticker
on the underside of the M4RTU/M4 I/O’s top cover.) The default baud rate is 38.4 Kbps.
Note that if an optional ARCNET or Ethernet expansion card is installed and ARCNET or Ethernet is configured
as the host, the baud rate jumper settings are irrelevant.
Summary of Contents for Modular M4RTU
Page 6: ...6 M4RTU M4 I O User s Guide TABLE OF CONTENTS...
Page 74: ...74 M4RTU M4 I O User s Guide FIELD WIRING...
Page 80: ...80 M4RTU M4 I O User s Guide PRODUCT SPECIFICATIONS...
Page 82: ...82 M4RTU M4 I O User s Guide ADDRESS JUMPER CONFIGURATION...
Page 86: ...86 M4RTU M4 I O User s Guide UPGRADING RAM AND FLASH EEPROM...
Page 89: ...M4RTU M4 I O User s Guide 89 WORKSHEETS Figure F 3 M4RTUX I O Extender I O Module Worksheet...
Page 91: ...M4RTU M4 I O User s Guide 91 WORKSHEETS Figure F 5 Field Wiring Worksheet Example 2...
Page 94: ...94 M4RTU M4 I O User s Guide WORKSHEETS...
