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manual abstract
After processing a valid command, an [OK] string will be returned. The [VERN] command will return the corresponding software version being used by the switcher, such as an error string, [ERR] will be returned. If the control system being used is not setup to wait for the [OK] string, it is important to include a 100 millisecond delay between each command. 7 SWITCHERS The MX2216RM Switcher is also designed to send feedback commands from the switcher to the control system when the buttons on the front panel of the switcher are pressed. The Feedback codes are as follows: Key pressed Description Feedback Code 1 Input Select [INP1] 2 Input Select [INP2] 3 Input Select [INP3] 4 Input Select [INP4] 5 Input Select [INP5] 6 Input Select [INP6] STAND BY All Outputs OFF [INP0] RESET Reset [RSET][INPx] The following commands are added to the standard set of commands in order to facilitate control of multiple units using a single RS-232 control port. These commands are available on the switcher that has firmware revision number: 2.0. Use [VERN] commands to determine the firmware revision. These commands add additional flexibility to the switcher. [InnOmm] nn -Input Number 00 to 99 mm -Output Number 01-99 This command connects any input to any output. The switching occurs as soon as the command is completed. The input 00 is used to disconnect a particular output from any input. For example, command [I00O01] will disconnect output 1 from any input. [OUTmm] This command sets the MX2216RM Switcher to respond to any specific output only. The default setting is output 1. [SETxnnmm] x select input number nn Minimum input number mm Maximum input number This command is designed to allow the MX2216RM Switcher to program each of the inputs to respond to a selected range of input commands. For example, if command [SET10104] is issued, then the following commands will select only Input 1: [I01O01], [I02O01], [I03O01], and [I04O01]. In other words a range of I/O commands can address the same input. The default settings for each of the inputs are as follows: Input 10101, Input 20202, Input 30303, Input 40404, Input 50505, and Input 60606. 7.3 MASTER-SLAVE CONFIGURATION These feedback codes allow multiple MX2216RM Switchers to be connected in a Master-Slave configuration, if desired. When the control ports of two units are connected as shown below, the slave unit duplicates the actions of the master unit. The same unit can still be controlled from its front panel or through another RS-232 control. MX2216RM 9-pin D MX2216RM 9-pin D Master PIN No. Slave PIN No. 2 3 5 5 Master-Slave Control Port Connection A Master-Slave configuration can be achieved also by Analog Switch Voltage using pin#9 and pin#7. MX2216RM 9-pin D MX2216RM 9-pin D Master PIN No. Slave PIN No. 9 7 5 5 Master-Slave Analog Switch Voltage Connection Figure 2 8 SWITCHERS With this configuration, the master unit has ultimate control over the slave unit. 7.4 CONTACT CLOSURE (ONE WIRE ANALOG) CONTROL The one-wire control is an alternative to a multi- wire contact closure control. This control pin allows you to select different channels based on the DC voltage level on pin 7 of the 9 pin D connector. Internally, pin 7 is pooled up to 5 volts by a 10k resistor. Thus, by selecting the proper resistor values connected to ground any channel can be selected. Although the channel selection next to the relay contact is latching and will maintain the last relay selected channel, it is recommended that momentary contact closures not be used. Typical resistor values and wire connections are shown below. In some cases, it may be preferable to use a seven-conductor wire to control the switcher with contact closures. The RC5204CC adapter is available to accommodate this need. The pin outs for this adapter are as follows: Figure 3 9 pin “D” Male Description 9 pin “D” Female Input 7 1.2K 1 1 7 3.3K 2 2 7 6.8K 3 3 7 12K 4 4 7 22K 5 5 7 51K 6 6 7 0 short 7 NONE 5 Ground 9 The following voltages apply for selecting the required channel: Input number min. (V) nom. (V) max. (V) 1 0.35 0.55 0.75 2 1.07 1.27 1.47 3 1.80 2.00 2.20 4 2.52 2.72 2.92 5 3.25 3.45 3.65 6 3.97 4.17 4.37 These voltage levels can be set using analog outputs from different control systems or spare dimmer control outputs. 7.5 MANUAL LOOP CONTROL Loop control is used when multiple units of the MX2216RM are connected to form a single switcher. When the input channel button is pressed the loop control pin is internally grounded and the MX2216RM Switcher selects INPUT 4 as the default input. In this configuration, the loop control pin 6 on the 9 pin D connector is connected to the same pin on all switchers. MX2216RM LOOP MX2216RM LOOP 6 6 5 5 MX2216RM 9-pin “D” Loop Figure 4 9 SWITCHERS The loop control pin has an internal 100k resistor to +5volts. This limits the number of switchers looped to a maximum of 10 switchers that are daisy chained together using this method. More specifically, the output of one switcher is connected t...