TTDMâNMM and - California Detection Systems

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SIM Network Access the SIM Network menu from the main menu. The SIM Network menu has the following submenus: • SIM Address • Init Network • Update Network SIM Address This command allows the user to assign a new address to a SIM unit from the TTDM- NMM. This function is vital to starting up a new leak detection network of TTDM-SIMs. To assign an address to an individual TTDM-SIM, the TTDM-NMM must communicate unambiguously with that SIM. This is accomplished by setting the initial address for a new SIM to 0 before it is connected to the RS-485 network. Any SIM can be forced to address 0 by placing a jumper clip on J1 at the lower left corner of the Sensor Interface board (see Appendix 5 for details). To add a new SIM to the leak detection network and assign it an address Install the SIM in accordance with the TTDM-SIM Installation Instructions (H56314) that accompany it. Then complete the following steps: 1. Verify that factory-installed jumper clip is in place at J1 (see Appendix 5 for details); the jumper clip forces the SIM address to 0 when the SIM is powered. 2. Connect the SIM to the TTDM-NMM RS-485 network (see Appendix 5 for details) and power the SIM. 3. Use the TTDM-NMM’s SIM Address function to assign a new (non-zero) address to the SIM. a. Press the Menu key to access the main menu. b. Select SIM Network and press Enter. c. Select SIM Address and press Enter. d. Use the arrow keys to select SIM Address 0. Important: Be careful to select channel 0, so you are changing the address intended. e. Press Enter. f. Select New Address and press Enter. g. Set the new address to an unused SIM address from 01 to 15 (note that address 01 is the factory default for the Sensor Interface board on the TTDM-NMM). Important: Be sure to assign a unique SIM address, or communications problems will result. h. Press Enter. i. Remove the jumper clip from J1 (the display will prompt you to do this). l. Press ESC several times to return to the monitoring display. 4. Repeat as necessary for each SIM added to the network. Note: Do not add more than one new SIM to the network at a time; assign each new SIM an address other than 0 before proceeding with the next SIM. Init Network Use this command to initiate the NMM/SIM network once all attached SIMs have been assigned unique addresses. When this option is selected, the NMM immediately searches all 16 possible addresses to determine which SIM channels are active. Also use this command if you have removed one or more SIMs from the leak detection network. Update Network Use this command when adding a single SIM to an existing network. Note: Use the Update Network command only to add SIMs to an existing network; use Init Network to trigger the TTDM-NMM to recognize that one or more SIMs have been removed. 20
TTDM Network Access the TTDM Network menu through the main menu. The TTDM-Network menu has the following submenus: • Baud • Modem • 485 Address • Modbus • Terminal • Print Events These parameters affect only the serial port for external communications (feature 19 in diagram on inside cover). The first four submenus require a password to make a change. Baud Use this option to select the baud rate of the external communications serial port. Standard values from 600 to 19200 baud are available. Default is 9600. Modem This menu item provides access to three submenus: • Auto Answer causes a text string to be sent to the external serial port, which will set a Hayes-compatible modem to autoanswer mode. • Dial allows the user to program an 11-digit numerical string into the menu. Hint: Use the Reset Button as a “tab” to jump to the numerical character. When Enter is pressed (after selecting the final digit in the numeric string), the dial commands and the numeric string are sent to the serial port to command an external Hayes-compatible modem. • Hang-up allows the user to send a hang-up command to an external modem attached to the serial port. 485 Address When more that one TTDM-NMM is connected to a host computer on an RS-485 network, each TTDM-NMM unit must be assigned a unique address. This menu allows the user to assign the TTDM-NMM an RS-485 address (the default address is 1). An address of 0 through 20 hex can be selected; however, 0 and 20 should be reserved for testing only. Using addresses 1 through 1F hex allows as many as 31 TTDM- NMMs on one network. Modbus Use this menu to select the correct Modbus protocol type, as used by the host computer, either ASCII or RTU. Terminal Use this option to view a one-line display of characters being sent to or received from the TTDM-NMM external communications serial port. Print Events Use this menu selection to send an ASCII text message through the serial port to an attached serial device (either a directly connected PC running a terminal-emulation program, a serial printer, or a modem). This function allows the user to download all events in the Event History memory for later analysis. Do not use this when connected to a Modbus network, as it may disrupt communications. 21
Page 1 and 2: R TraceTek TTDM-NMM and TTDM-SIM Le
Page 3: Contents Overview Identifying TTDM-
Page 6 and 7: Description of TraceTek Leak Detect
Page 8 and 9: Connection of TraceTek TTDM-NMM Sys
Page 10 and 11: Current Event/Status Display (Norma
Page 12 and 13: Leak Detection and Location Events
Page 14 and 15: Fault Events Introduction Several c
Page 16 and 17: Should the leak continue to spread,
Page 18 and 19: Status of Individual SIM Channels T
Page 20 and 21: Events History Log One extremely us
Page 22 and 23: General Setup Access the General Se
Page 26 and 27: Self-Test The Self-Test menu provid
Page 28 and 29: Appendix 2 - Events Glossary Type o
Page 30 and 31: Appendix 4 - Maintenance Cleaning t
Page 32 and 33: Assigning a SIM Address When a TTDM
Page 34 and 35: 4-20 mA Output Signals The TTDM-NMM
Page 36 and 37: Configuration and Testing of Serial
Page 38 and 39: Selecting RS-485 vs. RS-232 Communi
Page 40 and 41: TTDM-NMM Data Structure for Modbus
Page 42 and 43: SIM Channel Status The TTDM-NMM off
Page 44 and 45: Digital Inputs — Alarm Relay/LED
Page 46 and 47: Input Registers — SIM Status Data
Page 48 and 49: Holding Registers — Module Setup
Page 50 and 51: R R Appendix 8 - TTDM-NMM Network M
Page 52: www.raychem.com cheminfo@raychem.co

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TTDMâNMM and - California Detection Systems